1 /* pp_sys.c
2 *
3 * Copyright (C) 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others
5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
11 /*
12 * But only a short way ahead its floor and the walls on either side were
13 * cloven by a great fissure, out of which the red glare came, now leaping
14 * up, now dying down into darkness; and all the while far below there was
15 * a rumour and a trouble as of great engines throbbing and labouring.
16 */
17
18 #include "EXTERN.h"
19 #define PERL_IN_PP_SYS_C
20 #include "perl.h"
21
22 #ifdef I_SHADOW
23 /* Shadow password support for solaris - pdo@cs.umd.edu
24 * Not just Solaris: at least HP-UX, IRIX, Linux.
25 * The API is from SysV.
26 *
27 * There are at least two more shadow interfaces,
28 * see the comments in pp_gpwent().
29 *
30 * --jhi */
31 # ifdef __hpux__
32 /* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
33 * and another MAXINT from "perl.h" <- <sys/param.h>. */
34 # undef MAXINT
35 # endif
36 # include <shadow.h>
37 #endif
38
39 #ifdef HAS_SYSCALL
40 #ifdef __cplusplus
41 extern "C" int syscall(unsigned long,...);
42 #endif
43 #endif
44
45 #ifdef I_SYS_WAIT
46 # include <sys/wait.h>
47 #endif
48
49 #ifdef I_SYS_RESOURCE
50 # include <sys/resource.h>
51 #endif
52
53 #ifdef NETWARE
54 NETDB_DEFINE_CONTEXT
55 #endif
56
57 #ifdef HAS_SELECT
58 # ifdef I_SYS_SELECT
59 # include <sys/select.h>
60 # endif
61 #endif
62
63 /* XXX Configure test needed.
64 h_errno might not be a simple 'int', especially for multi-threaded
65 applications, see "extern int errno in perl.h". Creating such
66 a test requires taking into account the differences between
67 compiling multithreaded and singlethreaded ($ccflags et al).
68 HOST_NOT_FOUND is typically defined in <netdb.h>.
69 */
70 #if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
71 extern int h_errno;
72 #endif
73
74 #ifdef HAS_PASSWD
75 # ifdef I_PWD
76 # include <pwd.h>
77 # else
78 # if !defined(VMS)
79 struct passwd *getpwnam (char *);
80 struct passwd *getpwuid (Uid_t);
81 # endif
82 # endif
83 # ifdef HAS_GETPWENT
84 #ifndef getpwent
85 struct passwd *getpwent (void);
86 #elif defined (VMS) && defined (my_getpwent)
87 struct passwd *Perl_my_getpwent (void);
88 #endif
89 # endif
90 #endif
91
92 #ifdef HAS_GROUP
93 # ifdef I_GRP
94 # include <grp.h>
95 # else
96 struct group *getgrnam (char *);
97 struct group *getgrgid (Gid_t);
98 # endif
99 # ifdef HAS_GETGRENT
100 #ifndef getgrent
101 struct group *getgrent (void);
102 #endif
103 # endif
104 #endif
105
106 #ifdef I_UTIME
107 # if defined(_MSC_VER) || defined(__MINGW32__)
108 # include <sys/utime.h>
109 # else
110 # include <utime.h>
111 # endif
112 #endif
113
114 #ifdef HAS_CHSIZE
115 # ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
116 # undef my_chsize
117 # endif
118 # define my_chsize PerlLIO_chsize
119 #endif
120
121 #ifdef HAS_FLOCK
122 # define FLOCK flock
123 #else /* no flock() */
124
125 /* fcntl.h might not have been included, even if it exists, because
126 the current Configure only sets I_FCNTL if it's needed to pick up
127 the *_OK constants. Make sure it has been included before testing
128 the fcntl() locking constants. */
129 # if defined(HAS_FCNTL) && !defined(I_FCNTL)
130 # include <fcntl.h>
131 # endif
132
133 # if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
134 # define FLOCK fcntl_emulate_flock
135 # define FCNTL_EMULATE_FLOCK
136 # else /* no flock() or fcntl(F_SETLK,...) */
137 # ifdef HAS_LOCKF
138 # define FLOCK lockf_emulate_flock
139 # define LOCKF_EMULATE_FLOCK
140 # endif /* lockf */
141 # endif /* no flock() or fcntl(F_SETLK,...) */
142
143 # ifdef FLOCK
144 static int FLOCK (int, int);
145
146 /*
147 * These are the flock() constants. Since this sytems doesn't have
148 * flock(), the values of the constants are probably not available.
149 */
150 # ifndef LOCK_SH
151 # define LOCK_SH 1
152 # endif
153 # ifndef LOCK_EX
154 # define LOCK_EX 2
155 # endif
156 # ifndef LOCK_NB
157 # define LOCK_NB 4
158 # endif
159 # ifndef LOCK_UN
160 # define LOCK_UN 8
161 # endif
162 # endif /* emulating flock() */
163
164 #endif /* no flock() */
165
166 #define ZBTLEN 10
167 static char zero_but_true[ZBTLEN + 1] = "0 but true";
168
169 #if defined(I_SYS_ACCESS) && !defined(R_OK)
170 # include <sys/access.h>
171 #endif
172
173 #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
174 # define FD_CLOEXEC 1 /* NeXT needs this */
175 #endif
176
177 #include "reentr.h"
178
179 #ifdef __Lynx__
180 /* Missing protos on LynxOS */
181 void sethostent(int);
182 void endhostent(void);
183 void setnetent(int);
184 void endnetent(void);
185 void setprotoent(int);
186 void endprotoent(void);
187 void setservent(int);
188 void endservent(void);
189 #endif
190
191 #undef PERL_EFF_ACCESS_R_OK /* EFFective uid/gid ACCESS R_OK */
192 #undef PERL_EFF_ACCESS_W_OK
193 #undef PERL_EFF_ACCESS_X_OK
194
195 /* F_OK unused: if stat() cannot find it... */
196
197 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
198 /* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
199 # define PERL_EFF_ACCESS_R_OK(p) (access((p), R_OK | EFF_ONLY_OK))
200 # define PERL_EFF_ACCESS_W_OK(p) (access((p), W_OK | EFF_ONLY_OK))
201 # define PERL_EFF_ACCESS_X_OK(p) (access((p), X_OK | EFF_ONLY_OK))
202 #endif
203
204 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_EACCESS)
205 # ifdef I_SYS_SECURITY
206 # include <sys/security.h>
207 # endif
208 # ifdef ACC_SELF
209 /* HP SecureWare */
210 # define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK, ACC_SELF))
211 # define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK, ACC_SELF))
212 # define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK, ACC_SELF))
213 # else
214 /* SCO */
215 # define PERL_EFF_ACCESS_R_OK(p) (eaccess((p), R_OK))
216 # define PERL_EFF_ACCESS_W_OK(p) (eaccess((p), W_OK))
217 # define PERL_EFF_ACCESS_X_OK(p) (eaccess((p), X_OK))
218 # endif
219 #endif
220
221 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESSX) && defined(ACC_SELF)
222 /* AIX */
223 # define PERL_EFF_ACCESS_R_OK(p) (accessx((p), R_OK, ACC_SELF))
224 # define PERL_EFF_ACCESS_W_OK(p) (accessx((p), W_OK, ACC_SELF))
225 # define PERL_EFF_ACCESS_X_OK(p) (accessx((p), X_OK, ACC_SELF))
226 #endif
227
228 #if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) \
229 && (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
230 || defined(HAS_SETREGID) || defined(HAS_SETRESGID))
231 /* The Hard Way. */
232 STATIC int
S_emulate_eaccess(pTHX_ const char * path,Mode_t mode)233 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
234 {
235 Uid_t ruid = getuid();
236 Uid_t euid = geteuid();
237 Gid_t rgid = getgid();
238 Gid_t egid = getegid();
239 int res;
240
241 LOCK_CRED_MUTEX;
242 #if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
243 Perl_croak(aTHX_ "switching effective uid is not implemented");
244 #else
245 #ifdef HAS_SETREUID
246 if (setreuid(euid, ruid))
247 #else
248 #ifdef HAS_SETRESUID
249 if (setresuid(euid, ruid, (Uid_t)-1))
250 #endif
251 #endif
252 Perl_croak(aTHX_ "entering effective uid failed");
253 #endif
254
255 #if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
256 Perl_croak(aTHX_ "switching effective gid is not implemented");
257 #else
258 #ifdef HAS_SETREGID
259 if (setregid(egid, rgid))
260 #else
261 #ifdef HAS_SETRESGID
262 if (setresgid(egid, rgid, (Gid_t)-1))
263 #endif
264 #endif
265 Perl_croak(aTHX_ "entering effective gid failed");
266 #endif
267
268 res = access(path, mode);
269
270 #ifdef HAS_SETREUID
271 if (setreuid(ruid, euid))
272 #else
273 #ifdef HAS_SETRESUID
274 if (setresuid(ruid, euid, (Uid_t)-1))
275 #endif
276 #endif
277 Perl_croak(aTHX_ "leaving effective uid failed");
278
279 #ifdef HAS_SETREGID
280 if (setregid(rgid, egid))
281 #else
282 #ifdef HAS_SETRESGID
283 if (setresgid(rgid, egid, (Gid_t)-1))
284 #endif
285 #endif
286 Perl_croak(aTHX_ "leaving effective gid failed");
287 UNLOCK_CRED_MUTEX;
288
289 return res;
290 }
291 # define PERL_EFF_ACCESS_R_OK(p) (emulate_eaccess((p), R_OK))
292 # define PERL_EFF_ACCESS_W_OK(p) (emulate_eaccess((p), W_OK))
293 # define PERL_EFF_ACCESS_X_OK(p) (emulate_eaccess((p), X_OK))
294 #endif
295
296 #if !defined(PERL_EFF_ACCESS_R_OK)
297 /* With it or without it: anyway you get a warning: either that
298 it is unused, or it is declared static and never defined.
299 */
300 STATIC int
S_emulate_eaccess(pTHX_ const char * path,Mode_t mode)301 S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
302 {
303 Perl_croak(aTHX_ "switching effective uid is not implemented");
304 /*NOTREACHED*/
305 return -1;
306 }
307 #endif
308
PP(pp_backtick)309 PP(pp_backtick)
310 {
311 dSP; dTARGET;
312 PerlIO *fp;
313 STRLEN n_a;
314 char *tmps = POPpx;
315 I32 gimme = GIMME_V;
316 char *mode = "r";
317
318 TAINT_PROPER("``");
319 if (PL_op->op_private & OPpOPEN_IN_RAW)
320 mode = "rb";
321 else if (PL_op->op_private & OPpOPEN_IN_CRLF)
322 mode = "rt";
323 fp = PerlProc_popen(tmps, mode);
324 if (fp) {
325 char *type = NULL;
326 if (PL_curcop->cop_io) {
327 type = SvPV_nolen(PL_curcop->cop_io);
328 }
329 if (type && *type)
330 PerlIO_apply_layers(aTHX_ fp,mode,type);
331
332 if (gimme == G_VOID) {
333 char tmpbuf[256];
334 while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
335 /*SUPPRESS 530*/
336 ;
337 }
338 else if (gimme == G_SCALAR) {
339 SV *oldrs = PL_rs;
340 PL_rs = &PL_sv_undef;
341 sv_setpv(TARG, ""); /* note that this preserves previous buffer */
342 while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
343 /*SUPPRESS 530*/
344 ;
345 PL_rs = oldrs;
346 XPUSHs(TARG);
347 SvTAINTED_on(TARG);
348 }
349 else {
350 SV *sv;
351
352 for (;;) {
353 sv = NEWSV(56, 79);
354 if (sv_gets(sv, fp, 0) == Nullch) {
355 SvREFCNT_dec(sv);
356 break;
357 }
358 XPUSHs(sv_2mortal(sv));
359 if (SvLEN(sv) - SvCUR(sv) > 20) {
360 SvLEN_set(sv, SvCUR(sv)+1);
361 Renew(SvPVX(sv), SvLEN(sv), char);
362 }
363 SvTAINTED_on(sv);
364 }
365 }
366 STATUS_NATIVE_SET(PerlProc_pclose(fp));
367 TAINT; /* "I believe that this is not gratuitous!" */
368 }
369 else {
370 STATUS_NATIVE_SET(-1);
371 if (gimme == G_SCALAR)
372 RETPUSHUNDEF;
373 }
374
375 RETURN;
376 }
377
PP(pp_glob)378 PP(pp_glob)
379 {
380 OP *result;
381 tryAMAGICunTARGET(iter, -1);
382
383 /* Note that we only ever get here if File::Glob fails to load
384 * without at the same time croaking, for some reason, or if
385 * perl was built with PERL_EXTERNAL_GLOB */
386
387 ENTER;
388
389 #ifndef VMS
390 if (PL_tainting) {
391 /*
392 * The external globbing program may use things we can't control,
393 * so for security reasons we must assume the worst.
394 */
395 TAINT;
396 taint_proper(PL_no_security, "glob");
397 }
398 #endif /* !VMS */
399
400 SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
401 PL_last_in_gv = (GV*)*PL_stack_sp--;
402
403 SAVESPTR(PL_rs); /* This is not permanent, either. */
404 PL_rs = sv_2mortal(newSVpvn("\000", 1));
405 #ifndef DOSISH
406 #ifndef CSH
407 *SvPVX(PL_rs) = '\n';
408 #endif /* !CSH */
409 #endif /* !DOSISH */
410
411 result = do_readline();
412 LEAVE;
413 return result;
414 }
415
PP(pp_rcatline)416 PP(pp_rcatline)
417 {
418 PL_last_in_gv = cGVOP_gv;
419 return do_readline();
420 }
421
PP(pp_warn)422 PP(pp_warn)
423 {
424 dSP; dMARK;
425 SV *tmpsv;
426 char *tmps;
427 STRLEN len;
428 if (SP - MARK != 1) {
429 dTARGET;
430 do_join(TARG, &PL_sv_no, MARK, SP);
431 tmpsv = TARG;
432 SP = MARK + 1;
433 }
434 else {
435 tmpsv = TOPs;
436 }
437 tmps = SvPV(tmpsv, len);
438 if ((!tmps || !len) && PL_errgv) {
439 SV *error = ERRSV;
440 (void)SvUPGRADE(error, SVt_PV);
441 if (SvPOK(error) && SvCUR(error))
442 sv_catpv(error, "\t...caught");
443 tmpsv = error;
444 tmps = SvPV(tmpsv, len);
445 }
446 if (!tmps || !len)
447 tmpsv = sv_2mortal(newSVpvn("Warning: something's wrong", 26));
448
449 Perl_warn(aTHX_ "%"SVf, tmpsv);
450 RETSETYES;
451 }
452
PP(pp_die)453 PP(pp_die)
454 {
455 dSP; dMARK;
456 char *tmps;
457 SV *tmpsv;
458 STRLEN len;
459 bool multiarg = 0;
460 #ifdef VMS
461 VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
462 #endif
463 if (SP - MARK != 1) {
464 dTARGET;
465 do_join(TARG, &PL_sv_no, MARK, SP);
466 tmpsv = TARG;
467 tmps = SvPV(tmpsv, len);
468 multiarg = 1;
469 SP = MARK + 1;
470 }
471 else {
472 tmpsv = TOPs;
473 tmps = SvROK(tmpsv) ? Nullch : SvPV(tmpsv, len);
474 }
475 if (!tmps || !len) {
476 SV *error = ERRSV;
477 (void)SvUPGRADE(error, SVt_PV);
478 if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
479 if (!multiarg)
480 SvSetSV(error,tmpsv);
481 else if (sv_isobject(error)) {
482 HV *stash = SvSTASH(SvRV(error));
483 GV *gv = gv_fetchmethod(stash, "PROPAGATE");
484 if (gv) {
485 SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
486 SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
487 EXTEND(SP, 3);
488 PUSHMARK(SP);
489 PUSHs(error);
490 PUSHs(file);
491 PUSHs(line);
492 PUTBACK;
493 call_sv((SV*)GvCV(gv),
494 G_SCALAR|G_EVAL|G_KEEPERR);
495 sv_setsv(error,*PL_stack_sp--);
496 }
497 }
498 DIE(aTHX_ Nullformat);
499 }
500 else {
501 if (SvPOK(error) && SvCUR(error))
502 sv_catpv(error, "\t...propagated");
503 tmpsv = error;
504 tmps = SvPV(tmpsv, len);
505 }
506 }
507 if (!tmps || !len)
508 tmpsv = sv_2mortal(newSVpvn("Died", 4));
509
510 DIE(aTHX_ "%"SVf, tmpsv);
511 }
512
513 /* I/O. */
514
PP(pp_open)515 PP(pp_open)
516 {
517 dSP;
518 dMARK; dORIGMARK;
519 dTARGET;
520 GV *gv;
521 SV *sv;
522 IO *io;
523 char *tmps;
524 STRLEN len;
525 MAGIC *mg;
526 bool ok;
527
528 gv = (GV *)*++MARK;
529 if (!isGV(gv))
530 DIE(aTHX_ PL_no_usym, "filehandle");
531 if ((io = GvIOp(gv)))
532 IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
533
534 if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
535 /* Method's args are same as ours ... */
536 /* ... except handle is replaced by the object */
537 *MARK-- = SvTIED_obj((SV*)io, mg);
538 PUSHMARK(MARK);
539 PUTBACK;
540 ENTER;
541 call_method("OPEN", G_SCALAR);
542 LEAVE;
543 SPAGAIN;
544 RETURN;
545 }
546
547 if (MARK < SP) {
548 sv = *++MARK;
549 }
550 else {
551 sv = GvSV(gv);
552 }
553
554 tmps = SvPV(sv, len);
555 ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
556 SP = ORIGMARK;
557 if (ok)
558 PUSHi( (I32)PL_forkprocess );
559 else if (PL_forkprocess == 0) /* we are a new child */
560 PUSHi(0);
561 else
562 RETPUSHUNDEF;
563 RETURN;
564 }
565
PP(pp_close)566 PP(pp_close)
567 {
568 dSP;
569 GV *gv;
570 IO *io;
571 MAGIC *mg;
572
573 if (MAXARG == 0)
574 gv = PL_defoutgv;
575 else
576 gv = (GV*)POPs;
577
578 if (gv && (io = GvIO(gv))
579 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
580 {
581 PUSHMARK(SP);
582 XPUSHs(SvTIED_obj((SV*)io, mg));
583 PUTBACK;
584 ENTER;
585 call_method("CLOSE", G_SCALAR);
586 LEAVE;
587 SPAGAIN;
588 RETURN;
589 }
590 EXTEND(SP, 1);
591 PUSHs(boolSV(do_close(gv, TRUE)));
592 RETURN;
593 }
594
PP(pp_pipe_op)595 PP(pp_pipe_op)
596 {
597 #ifdef HAS_PIPE
598 dSP;
599 GV *rgv;
600 GV *wgv;
601 register IO *rstio;
602 register IO *wstio;
603 int fd[2];
604
605 wgv = (GV*)POPs;
606 rgv = (GV*)POPs;
607
608 if (!rgv || !wgv)
609 goto badexit;
610
611 if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
612 DIE(aTHX_ PL_no_usym, "filehandle");
613 rstio = GvIOn(rgv);
614 wstio = GvIOn(wgv);
615
616 if (IoIFP(rstio))
617 do_close(rgv, FALSE);
618 if (IoIFP(wstio))
619 do_close(wgv, FALSE);
620
621 if (PerlProc_pipe(fd) < 0)
622 goto badexit;
623
624 IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
625 IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
626 IoOFP(rstio) = IoIFP(rstio);
627 IoIFP(wstio) = IoOFP(wstio);
628 IoTYPE(rstio) = IoTYPE_RDONLY;
629 IoTYPE(wstio) = IoTYPE_WRONLY;
630
631 if (!IoIFP(rstio) || !IoOFP(wstio)) {
632 if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
633 else PerlLIO_close(fd[0]);
634 if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
635 else PerlLIO_close(fd[1]);
636 goto badexit;
637 }
638 #if defined(HAS_FCNTL) && defined(F_SETFD)
639 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
640 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
641 #endif
642 RETPUSHYES;
643
644 badexit:
645 RETPUSHUNDEF;
646 #else
647 DIE(aTHX_ PL_no_func, "pipe");
648 #endif
649 }
650
PP(pp_fileno)651 PP(pp_fileno)
652 {
653 dSP; dTARGET;
654 GV *gv;
655 IO *io;
656 PerlIO *fp;
657 MAGIC *mg;
658
659 if (MAXARG < 1)
660 RETPUSHUNDEF;
661 gv = (GV*)POPs;
662
663 if (gv && (io = GvIO(gv))
664 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
665 {
666 PUSHMARK(SP);
667 XPUSHs(SvTIED_obj((SV*)io, mg));
668 PUTBACK;
669 ENTER;
670 call_method("FILENO", G_SCALAR);
671 LEAVE;
672 SPAGAIN;
673 RETURN;
674 }
675
676 if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
677 /* Can't do this because people seem to do things like
678 defined(fileno($foo)) to check whether $foo is a valid fh.
679 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
680 report_evil_fh(gv, io, PL_op->op_type);
681 */
682 RETPUSHUNDEF;
683 }
684
685 PUSHi(PerlIO_fileno(fp));
686 RETURN;
687 }
688
PP(pp_umask)689 PP(pp_umask)
690 {
691 dSP; dTARGET;
692 #ifdef HAS_UMASK
693 Mode_t anum;
694
695 if (MAXARG < 1) {
696 anum = PerlLIO_umask(0);
697 (void)PerlLIO_umask(anum);
698 }
699 else
700 anum = PerlLIO_umask(POPi);
701 TAINT_PROPER("umask");
702 XPUSHi(anum);
703 #else
704 /* Only DIE if trying to restrict permissions on `user' (self).
705 * Otherwise it's harmless and more useful to just return undef
706 * since 'group' and 'other' concepts probably don't exist here. */
707 if (MAXARG >= 1 && (POPi & 0700))
708 DIE(aTHX_ "umask not implemented");
709 XPUSHs(&PL_sv_undef);
710 #endif
711 RETURN;
712 }
713
PP(pp_binmode)714 PP(pp_binmode)
715 {
716 dSP;
717 GV *gv;
718 IO *io;
719 PerlIO *fp;
720 MAGIC *mg;
721 SV *discp = Nullsv;
722
723 if (MAXARG < 1)
724 RETPUSHUNDEF;
725 if (MAXARG > 1) {
726 discp = POPs;
727 }
728
729 gv = (GV*)POPs;
730
731 if (gv && (io = GvIO(gv))
732 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
733 {
734 PUSHMARK(SP);
735 XPUSHs(SvTIED_obj((SV*)io, mg));
736 if (discp)
737 XPUSHs(discp);
738 PUTBACK;
739 ENTER;
740 call_method("BINMODE", G_SCALAR);
741 LEAVE;
742 SPAGAIN;
743 RETURN;
744 }
745
746 EXTEND(SP, 1);
747 if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
748 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
749 report_evil_fh(gv, io, PL_op->op_type);
750 SETERRNO(EBADF,RMS_IFI);
751 RETPUSHUNDEF;
752 }
753
754 PUTBACK;
755 if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
756 (discp) ? SvPV_nolen(discp) : Nullch)) {
757 if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
758 if (!PerlIO_binmode(aTHX_ IoOFP(io),IoTYPE(io),
759 mode_from_discipline(discp),
760 (discp) ? SvPV_nolen(discp) : Nullch)) {
761 SPAGAIN;
762 RETPUSHUNDEF;
763 }
764 }
765 SPAGAIN;
766 RETPUSHYES;
767 }
768 else {
769 SPAGAIN;
770 RETPUSHUNDEF;
771 }
772 }
773
PP(pp_tie)774 PP(pp_tie)
775 {
776 dSP;
777 dMARK;
778 SV *varsv;
779 HV* stash;
780 GV *gv;
781 SV *sv;
782 I32 markoff = MARK - PL_stack_base;
783 char *methname;
784 int how = PERL_MAGIC_tied;
785 U32 items;
786
787 varsv = *++MARK;
788 switch(SvTYPE(varsv)) {
789 case SVt_PVHV:
790 methname = "TIEHASH";
791 HvEITER((HV *)varsv) = Null(HE *);
792 break;
793 case SVt_PVAV:
794 methname = "TIEARRAY";
795 break;
796 case SVt_PVGV:
797 #ifdef GV_UNIQUE_CHECK
798 if (GvUNIQUE((GV*)varsv)) {
799 Perl_croak(aTHX_ "Attempt to tie unique GV");
800 }
801 #endif
802 methname = "TIEHANDLE";
803 how = PERL_MAGIC_tiedscalar;
804 /* For tied filehandles, we apply tiedscalar magic to the IO
805 slot of the GP rather than the GV itself. AMS 20010812 */
806 if (!GvIOp(varsv))
807 GvIOp(varsv) = newIO();
808 varsv = (SV *)GvIOp(varsv);
809 break;
810 default:
811 methname = "TIESCALAR";
812 how = PERL_MAGIC_tiedscalar;
813 break;
814 }
815 items = SP - MARK++;
816 if (sv_isobject(*MARK)) {
817 ENTER;
818 PUSHSTACKi(PERLSI_MAGIC);
819 PUSHMARK(SP);
820 EXTEND(SP,(I32)items);
821 while (items--)
822 PUSHs(*MARK++);
823 PUTBACK;
824 call_method(methname, G_SCALAR);
825 }
826 else {
827 /* Not clear why we don't call call_method here too.
828 * perhaps to get different error message ?
829 */
830 stash = gv_stashsv(*MARK, FALSE);
831 if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
832 DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
833 methname, *MARK);
834 }
835 ENTER;
836 PUSHSTACKi(PERLSI_MAGIC);
837 PUSHMARK(SP);
838 EXTEND(SP,(I32)items);
839 while (items--)
840 PUSHs(*MARK++);
841 PUTBACK;
842 call_sv((SV*)GvCV(gv), G_SCALAR);
843 }
844 SPAGAIN;
845
846 sv = TOPs;
847 POPSTACK;
848 if (sv_isobject(sv)) {
849 sv_unmagic(varsv, how);
850 /* Croak if a self-tie on an aggregate is attempted. */
851 if (varsv == SvRV(sv) &&
852 (SvTYPE(varsv) == SVt_PVAV ||
853 SvTYPE(varsv) == SVt_PVHV))
854 Perl_croak(aTHX_
855 "Self-ties of arrays and hashes are not supported");
856 sv_magic(varsv, (SvRV(sv) == varsv ? Nullsv : sv), how, Nullch, 0);
857 }
858 LEAVE;
859 SP = PL_stack_base + markoff;
860 PUSHs(sv);
861 RETURN;
862 }
863
PP(pp_untie)864 PP(pp_untie)
865 {
866 dSP;
867 MAGIC *mg;
868 SV *sv = POPs;
869 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
870 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
871
872 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
873 RETPUSHYES;
874
875 if ((mg = SvTIED_mg(sv, how))) {
876 SV *obj = SvRV(SvTIED_obj(sv, mg));
877 GV *gv;
878 CV *cv = NULL;
879 if (obj) {
880 if ((gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE)) &&
881 isGV(gv) && (cv = GvCV(gv))) {
882 PUSHMARK(SP);
883 XPUSHs(SvTIED_obj((SV*)gv, mg));
884 XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
885 PUTBACK;
886 ENTER;
887 call_sv((SV *)cv, G_VOID);
888 LEAVE;
889 SPAGAIN;
890 }
891 else if (ckWARN(WARN_UNTIE)) {
892 if (mg && SvREFCNT(obj) > 1)
893 Perl_warner(aTHX_ packWARN(WARN_UNTIE),
894 "untie attempted while %"UVuf" inner references still exist",
895 (UV)SvREFCNT(obj) - 1 ) ;
896 }
897 }
898 }
899 sv_unmagic(sv, how) ;
900 RETPUSHYES;
901 }
902
PP(pp_tied)903 PP(pp_tied)
904 {
905 dSP;
906 MAGIC *mg;
907 SV *sv = POPs;
908 char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
909 ? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
910
911 if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
912 RETPUSHUNDEF;
913
914 if ((mg = SvTIED_mg(sv, how))) {
915 SV *osv = SvTIED_obj(sv, mg);
916 if (osv == mg->mg_obj)
917 osv = sv_mortalcopy(osv);
918 PUSHs(osv);
919 RETURN;
920 }
921 RETPUSHUNDEF;
922 }
923
PP(pp_dbmopen)924 PP(pp_dbmopen)
925 {
926 dSP;
927 HV *hv;
928 dPOPPOPssrl;
929 HV* stash;
930 GV *gv;
931 SV *sv;
932
933 hv = (HV*)POPs;
934
935 sv = sv_mortalcopy(&PL_sv_no);
936 sv_setpv(sv, "AnyDBM_File");
937 stash = gv_stashsv(sv, FALSE);
938 if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
939 PUTBACK;
940 require_pv("AnyDBM_File.pm");
941 SPAGAIN;
942 if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
943 DIE(aTHX_ "No dbm on this machine");
944 }
945
946 ENTER;
947 PUSHMARK(SP);
948
949 EXTEND(SP, 5);
950 PUSHs(sv);
951 PUSHs(left);
952 if (SvIV(right))
953 PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
954 else
955 PUSHs(sv_2mortal(newSVuv(O_RDWR)));
956 PUSHs(right);
957 PUTBACK;
958 call_sv((SV*)GvCV(gv), G_SCALAR);
959 SPAGAIN;
960
961 if (!sv_isobject(TOPs)) {
962 SP--;
963 PUSHMARK(SP);
964 PUSHs(sv);
965 PUSHs(left);
966 PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
967 PUSHs(right);
968 PUTBACK;
969 call_sv((SV*)GvCV(gv), G_SCALAR);
970 SPAGAIN;
971 }
972
973 if (sv_isobject(TOPs)) {
974 sv_unmagic((SV *) hv, PERL_MAGIC_tied);
975 sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
976 }
977 LEAVE;
978 RETURN;
979 }
980
PP(pp_dbmclose)981 PP(pp_dbmclose)
982 {
983 return pp_untie();
984 }
985
PP(pp_sselect)986 PP(pp_sselect)
987 {
988 #ifdef HAS_SELECT
989 dSP; dTARGET;
990 register I32 i;
991 register I32 j;
992 register char *s;
993 register SV *sv;
994 NV value;
995 I32 maxlen = 0;
996 I32 nfound;
997 struct timeval timebuf;
998 struct timeval *tbuf = &timebuf;
999 I32 growsize;
1000 char *fd_sets[4];
1001 STRLEN n_a;
1002 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1003 I32 masksize;
1004 I32 offset;
1005 I32 k;
1006
1007 # if BYTEORDER & 0xf0000
1008 # define ORDERBYTE (0x88888888 - BYTEORDER)
1009 # else
1010 # define ORDERBYTE (0x4444 - BYTEORDER)
1011 # endif
1012
1013 #endif
1014
1015 SP -= 4;
1016 for (i = 1; i <= 3; i++) {
1017 if (!SvPOK(SP[i]))
1018 continue;
1019 j = SvCUR(SP[i]);
1020 if (maxlen < j)
1021 maxlen = j;
1022 }
1023
1024 /* little endians can use vecs directly */
1025 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1026 # ifdef NFDBITS
1027
1028 # ifndef NBBY
1029 # define NBBY 8
1030 # endif
1031
1032 masksize = NFDBITS / NBBY;
1033 # else
1034 masksize = sizeof(long); /* documented int, everyone seems to use long */
1035 # endif
1036 Zero(&fd_sets[0], 4, char*);
1037 #endif
1038
1039 # if SELECT_MIN_BITS == 1
1040 growsize = sizeof(fd_set);
1041 # else
1042 # if defined(__GLIBC__) && defined(__FD_SETSIZE)
1043 # undef SELECT_MIN_BITS
1044 # define SELECT_MIN_BITS __FD_SETSIZE
1045 # endif
1046 /* If SELECT_MIN_BITS is greater than one we most probably will want
1047 * to align the sizes with SELECT_MIN_BITS/8 because for example
1048 * in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
1049 * UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
1050 * on (sets/tests/clears bits) is 32 bits. */
1051 growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
1052 # endif
1053
1054 sv = SP[4];
1055 if (SvOK(sv)) {
1056 value = SvNV(sv);
1057 if (value < 0.0)
1058 value = 0.0;
1059 timebuf.tv_sec = (long)value;
1060 value -= (NV)timebuf.tv_sec;
1061 timebuf.tv_usec = (long)(value * 1000000.0);
1062 }
1063 else
1064 tbuf = Null(struct timeval*);
1065
1066 for (i = 1; i <= 3; i++) {
1067 sv = SP[i];
1068 if (!SvOK(sv)) {
1069 fd_sets[i] = 0;
1070 continue;
1071 }
1072 else if (!SvPOK(sv))
1073 SvPV_force(sv,n_a); /* force string conversion */
1074 j = SvLEN(sv);
1075 if (j < growsize) {
1076 Sv_Grow(sv, growsize);
1077 }
1078 j = SvCUR(sv);
1079 s = SvPVX(sv) + j;
1080 while (++j <= growsize) {
1081 *s++ = '\0';
1082 }
1083
1084 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1085 s = SvPVX(sv);
1086 New(403, fd_sets[i], growsize, char);
1087 for (offset = 0; offset < growsize; offset += masksize) {
1088 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1089 fd_sets[i][j+offset] = s[(k % masksize) + offset];
1090 }
1091 #else
1092 fd_sets[i] = SvPVX(sv);
1093 #endif
1094 }
1095
1096 #ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
1097 /* Can't make just the (void*) conditional because that would be
1098 * cpp #if within cpp macro, and not all compilers like that. */
1099 nfound = PerlSock_select(
1100 maxlen * 8,
1101 (Select_fd_set_t) fd_sets[1],
1102 (Select_fd_set_t) fd_sets[2],
1103 (Select_fd_set_t) fd_sets[3],
1104 (void*) tbuf); /* Workaround for compiler bug. */
1105 #else
1106 nfound = PerlSock_select(
1107 maxlen * 8,
1108 (Select_fd_set_t) fd_sets[1],
1109 (Select_fd_set_t) fd_sets[2],
1110 (Select_fd_set_t) fd_sets[3],
1111 tbuf);
1112 #endif
1113 for (i = 1; i <= 3; i++) {
1114 if (fd_sets[i]) {
1115 sv = SP[i];
1116 #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
1117 s = SvPVX(sv);
1118 for (offset = 0; offset < growsize; offset += masksize) {
1119 for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
1120 s[(k % masksize) + offset] = fd_sets[i][j+offset];
1121 }
1122 Safefree(fd_sets[i]);
1123 #endif
1124 SvSETMAGIC(sv);
1125 }
1126 }
1127
1128 PUSHi(nfound);
1129 if (GIMME == G_ARRAY && tbuf) {
1130 value = (NV)(timebuf.tv_sec) +
1131 (NV)(timebuf.tv_usec) / 1000000.0;
1132 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
1133 sv_setnv(sv, value);
1134 }
1135 RETURN;
1136 #else
1137 DIE(aTHX_ "select not implemented");
1138 #endif
1139 }
1140
1141 void
Perl_setdefout(pTHX_ GV * gv)1142 Perl_setdefout(pTHX_ GV *gv)
1143 {
1144 if (gv)
1145 (void)SvREFCNT_inc(gv);
1146 if (PL_defoutgv)
1147 SvREFCNT_dec(PL_defoutgv);
1148 PL_defoutgv = gv;
1149 }
1150
PP(pp_select)1151 PP(pp_select)
1152 {
1153 dSP; dTARGET;
1154 GV *newdefout, *egv;
1155 HV *hv;
1156
1157 newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
1158
1159 egv = GvEGV(PL_defoutgv);
1160 if (!egv)
1161 egv = PL_defoutgv;
1162 hv = GvSTASH(egv);
1163 if (! hv)
1164 XPUSHs(&PL_sv_undef);
1165 else {
1166 GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
1167 if (gvp && *gvp == egv) {
1168 gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
1169 XPUSHTARG;
1170 }
1171 else {
1172 XPUSHs(sv_2mortal(newRV((SV*)egv)));
1173 }
1174 }
1175
1176 if (newdefout) {
1177 if (!GvIO(newdefout))
1178 gv_IOadd(newdefout);
1179 setdefout(newdefout);
1180 }
1181
1182 RETURN;
1183 }
1184
PP(pp_getc)1185 PP(pp_getc)
1186 {
1187 dSP; dTARGET;
1188 GV *gv;
1189 IO *io = NULL;
1190 MAGIC *mg;
1191
1192 if (MAXARG == 0)
1193 gv = PL_stdingv;
1194 else
1195 gv = (GV*)POPs;
1196
1197 if (gv && (io = GvIO(gv))
1198 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1199 {
1200 I32 gimme = GIMME_V;
1201 PUSHMARK(SP);
1202 XPUSHs(SvTIED_obj((SV*)io, mg));
1203 PUTBACK;
1204 ENTER;
1205 call_method("GETC", gimme);
1206 LEAVE;
1207 SPAGAIN;
1208 if (gimme == G_SCALAR)
1209 SvSetMagicSV_nosteal(TARG, TOPs);
1210 RETURN;
1211 }
1212 if (!gv || do_eof(gv)) { /* make sure we have fp with something */
1213 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)
1214 && (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY)))
1215 report_evil_fh(gv, io, PL_op->op_type);
1216 SETERRNO(EBADF,RMS_IFI);
1217 RETPUSHUNDEF;
1218 }
1219 TAINT;
1220 sv_setpv(TARG, " ");
1221 *SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
1222 if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
1223 /* Find out how many bytes the char needs */
1224 Size_t len = UTF8SKIP(SvPVX(TARG));
1225 if (len > 1) {
1226 SvGROW(TARG,len+1);
1227 len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
1228 SvCUR_set(TARG,1+len);
1229 }
1230 SvUTF8_on(TARG);
1231 }
1232 PUSHTARG;
1233 RETURN;
1234 }
1235
PP(pp_read)1236 PP(pp_read)
1237 {
1238 return pp_sysread();
1239 }
1240
1241 STATIC OP *
S_doform(pTHX_ CV * cv,GV * gv,OP * retop)1242 S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
1243 {
1244 register PERL_CONTEXT *cx;
1245 I32 gimme = GIMME_V;
1246
1247 ENTER;
1248 SAVETMPS;
1249
1250 push_return(retop);
1251 PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
1252 PUSHFORMAT(cx);
1253 PAD_SET_CUR(CvPADLIST(cv), 1);
1254
1255 setdefout(gv); /* locally select filehandle so $% et al work */
1256 return CvSTART(cv);
1257 }
1258
PP(pp_enterwrite)1259 PP(pp_enterwrite)
1260 {
1261 dSP;
1262 register GV *gv;
1263 register IO *io;
1264 GV *fgv;
1265 CV *cv;
1266
1267 if (MAXARG == 0)
1268 gv = PL_defoutgv;
1269 else {
1270 gv = (GV*)POPs;
1271 if (!gv)
1272 gv = PL_defoutgv;
1273 }
1274 EXTEND(SP, 1);
1275 io = GvIO(gv);
1276 if (!io) {
1277 RETPUSHNO;
1278 }
1279 if (IoFMT_GV(io))
1280 fgv = IoFMT_GV(io);
1281 else
1282 fgv = gv;
1283
1284 cv = GvFORM(fgv);
1285 if (!cv) {
1286 char *name = NULL;
1287 if (fgv) {
1288 SV *tmpsv = sv_newmortal();
1289 gv_efullname4(tmpsv, fgv, Nullch, FALSE);
1290 name = SvPV_nolen(tmpsv);
1291 }
1292 if (name && *name)
1293 DIE(aTHX_ "Undefined format \"%s\" called", name);
1294 DIE(aTHX_ "Not a format reference");
1295 }
1296 if (CvCLONE(cv))
1297 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1298
1299 IoFLAGS(io) &= ~IOf_DIDTOP;
1300 return doform(cv,gv,PL_op->op_next);
1301 }
1302
PP(pp_leavewrite)1303 PP(pp_leavewrite)
1304 {
1305 dSP;
1306 GV *gv = cxstack[cxstack_ix].blk_sub.gv;
1307 register IO *io = GvIOp(gv);
1308 PerlIO *ofp = IoOFP(io);
1309 PerlIO *fp;
1310 SV **newsp;
1311 I32 gimme;
1312 register PERL_CONTEXT *cx;
1313
1314 DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
1315 (long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
1316 if (!io || !ofp)
1317 goto forget_top;
1318 if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
1319 PL_formtarget != PL_toptarget)
1320 {
1321 GV *fgv;
1322 CV *cv;
1323 if (!IoTOP_GV(io)) {
1324 GV *topgv;
1325 SV *topname;
1326
1327 if (!IoTOP_NAME(io)) {
1328 if (!IoFMT_NAME(io))
1329 IoFMT_NAME(io) = savepv(GvNAME(gv));
1330 topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
1331 topgv = gv_fetchpv(SvPVX(topname), FALSE, SVt_PVFM);
1332 if ((topgv && GvFORM(topgv)) ||
1333 !gv_fetchpv("top",FALSE,SVt_PVFM))
1334 IoTOP_NAME(io) = savepv(SvPVX(topname));
1335 else
1336 IoTOP_NAME(io) = savepv("top");
1337 }
1338 topgv = gv_fetchpv(IoTOP_NAME(io),FALSE, SVt_PVFM);
1339 if (!topgv || !GvFORM(topgv)) {
1340 IoLINES_LEFT(io) = 100000000;
1341 goto forget_top;
1342 }
1343 IoTOP_GV(io) = topgv;
1344 }
1345 if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
1346 I32 lines = IoLINES_LEFT(io);
1347 char *s = SvPVX(PL_formtarget);
1348 if (lines <= 0) /* Yow, header didn't even fit!!! */
1349 goto forget_top;
1350 while (lines-- > 0) {
1351 s = strchr(s, '\n');
1352 if (!s)
1353 break;
1354 s++;
1355 }
1356 if (s) {
1357 STRLEN save = SvCUR(PL_formtarget);
1358 SvCUR_set(PL_formtarget, s - SvPVX(PL_formtarget));
1359 do_print(PL_formtarget, ofp);
1360 SvCUR_set(PL_formtarget, save);
1361 sv_chop(PL_formtarget, s);
1362 FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
1363 }
1364 }
1365 if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
1366 do_print(PL_formfeed, ofp);
1367 IoLINES_LEFT(io) = IoPAGE_LEN(io);
1368 IoPAGE(io)++;
1369 PL_formtarget = PL_toptarget;
1370 IoFLAGS(io) |= IOf_DIDTOP;
1371 fgv = IoTOP_GV(io);
1372 if (!fgv)
1373 DIE(aTHX_ "bad top format reference");
1374 cv = GvFORM(fgv);
1375 {
1376 char *name = NULL;
1377 if (!cv) {
1378 SV *sv = sv_newmortal();
1379 gv_efullname4(sv, fgv, Nullch, FALSE);
1380 name = SvPV_nolen(sv);
1381 }
1382 if (name && *name)
1383 DIE(aTHX_ "Undefined top format \"%s\" called",name);
1384 /* why no:
1385 else
1386 DIE(aTHX_ "Undefined top format called");
1387 ?*/
1388 }
1389 if (CvCLONE(cv))
1390 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
1391 return doform(cv,gv,PL_op);
1392 }
1393
1394 forget_top:
1395 POPBLOCK(cx,PL_curpm);
1396 POPFORMAT(cx);
1397 LEAVE;
1398
1399 fp = IoOFP(io);
1400 if (!fp) {
1401 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1402 if (IoIFP(io))
1403 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1404 else if (ckWARN(WARN_CLOSED))
1405 report_evil_fh(gv, io, PL_op->op_type);
1406 }
1407 PUSHs(&PL_sv_no);
1408 }
1409 else {
1410 if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
1411 if (ckWARN(WARN_IO))
1412 Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
1413 }
1414 if (!do_print(PL_formtarget, fp))
1415 PUSHs(&PL_sv_no);
1416 else {
1417 FmLINES(PL_formtarget) = 0;
1418 SvCUR_set(PL_formtarget, 0);
1419 *SvEND(PL_formtarget) = '\0';
1420 if (IoFLAGS(io) & IOf_FLUSH)
1421 (void)PerlIO_flush(fp);
1422 PUSHs(&PL_sv_yes);
1423 }
1424 }
1425 /* bad_ofp: */
1426 PL_formtarget = PL_bodytarget;
1427 PUTBACK;
1428 return pop_return();
1429 }
1430
PP(pp_prtf)1431 PP(pp_prtf)
1432 {
1433 dSP; dMARK; dORIGMARK;
1434 GV *gv;
1435 IO *io;
1436 PerlIO *fp;
1437 SV *sv;
1438 MAGIC *mg;
1439
1440 if (PL_op->op_flags & OPf_STACKED)
1441 gv = (GV*)*++MARK;
1442 else
1443 gv = PL_defoutgv;
1444
1445 if (gv && (io = GvIO(gv))
1446 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1447 {
1448 if (MARK == ORIGMARK) {
1449 MEXTEND(SP, 1);
1450 ++MARK;
1451 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
1452 ++SP;
1453 }
1454 PUSHMARK(MARK - 1);
1455 *MARK = SvTIED_obj((SV*)io, mg);
1456 PUTBACK;
1457 ENTER;
1458 call_method("PRINTF", G_SCALAR);
1459 LEAVE;
1460 SPAGAIN;
1461 MARK = ORIGMARK + 1;
1462 *MARK = *SP;
1463 SP = MARK;
1464 RETURN;
1465 }
1466
1467 sv = NEWSV(0,0);
1468 if (!(io = GvIO(gv))) {
1469 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1470 report_evil_fh(gv, io, PL_op->op_type);
1471 SETERRNO(EBADF,RMS_IFI);
1472 goto just_say_no;
1473 }
1474 else if (!(fp = IoOFP(io))) {
1475 if (ckWARN2(WARN_CLOSED,WARN_IO)) {
1476 if (IoIFP(io))
1477 report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
1478 else if (ckWARN(WARN_CLOSED))
1479 report_evil_fh(gv, io, PL_op->op_type);
1480 }
1481 SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
1482 goto just_say_no;
1483 }
1484 else {
1485 do_sprintf(sv, SP - MARK, MARK + 1);
1486 if (!do_print(sv, fp))
1487 goto just_say_no;
1488
1489 if (IoFLAGS(io) & IOf_FLUSH)
1490 if (PerlIO_flush(fp) == EOF)
1491 goto just_say_no;
1492 }
1493 SvREFCNT_dec(sv);
1494 SP = ORIGMARK;
1495 PUSHs(&PL_sv_yes);
1496 RETURN;
1497
1498 just_say_no:
1499 SvREFCNT_dec(sv);
1500 SP = ORIGMARK;
1501 PUSHs(&PL_sv_undef);
1502 RETURN;
1503 }
1504
PP(pp_sysopen)1505 PP(pp_sysopen)
1506 {
1507 dSP;
1508 GV *gv;
1509 SV *sv;
1510 char *tmps;
1511 STRLEN len;
1512 int mode, perm;
1513
1514 if (MAXARG > 3)
1515 perm = POPi;
1516 else
1517 perm = 0666;
1518 mode = POPi;
1519 sv = POPs;
1520 gv = (GV *)POPs;
1521
1522 /* Need TIEHANDLE method ? */
1523
1524 tmps = SvPV(sv, len);
1525 if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
1526 IoLINES(GvIOp(gv)) = 0;
1527 PUSHs(&PL_sv_yes);
1528 }
1529 else {
1530 PUSHs(&PL_sv_undef);
1531 }
1532 RETURN;
1533 }
1534
PP(pp_sysread)1535 PP(pp_sysread)
1536 {
1537 dSP; dMARK; dORIGMARK; dTARGET;
1538 int offset;
1539 GV *gv;
1540 IO *io;
1541 char *buffer;
1542 SSize_t length;
1543 SSize_t count;
1544 Sock_size_t bufsize;
1545 SV *bufsv;
1546 STRLEN blen;
1547 MAGIC *mg;
1548 int fp_utf8;
1549 Size_t got = 0;
1550 Size_t wanted;
1551 bool charstart = FALSE;
1552 STRLEN charskip = 0;
1553 STRLEN skip = 0;
1554
1555 gv = (GV*)*++MARK;
1556 if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
1557 && gv && (io = GvIO(gv))
1558 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1559 {
1560 SV *sv;
1561
1562 PUSHMARK(MARK-1);
1563 *MARK = SvTIED_obj((SV*)io, mg);
1564 ENTER;
1565 call_method("READ", G_SCALAR);
1566 LEAVE;
1567 SPAGAIN;
1568 sv = POPs;
1569 SP = ORIGMARK;
1570 PUSHs(sv);
1571 RETURN;
1572 }
1573
1574 if (!gv)
1575 goto say_undef;
1576 bufsv = *++MARK;
1577 if (! SvOK(bufsv))
1578 sv_setpvn(bufsv, "", 0);
1579 length = SvIVx(*++MARK);
1580 SETERRNO(0,0);
1581 if (MARK < SP)
1582 offset = SvIVx(*++MARK);
1583 else
1584 offset = 0;
1585 io = GvIO(gv);
1586 if (!io || !IoIFP(io)) {
1587 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
1588 report_evil_fh(gv, io, PL_op->op_type);
1589 SETERRNO(EBADF,RMS_IFI);
1590 goto say_undef;
1591 }
1592 if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
1593 buffer = SvPVutf8_force(bufsv, blen);
1594 /* UTF-8 may not have been set if they are all low bytes */
1595 SvUTF8_on(bufsv);
1596 }
1597 else {
1598 buffer = SvPV_force(bufsv, blen);
1599 }
1600 if (length < 0)
1601 DIE(aTHX_ "Negative length");
1602 wanted = length;
1603
1604 charstart = TRUE;
1605 charskip = 0;
1606 skip = 0;
1607
1608 #ifdef HAS_SOCKET
1609 if (PL_op->op_type == OP_RECV) {
1610 char namebuf[MAXPATHLEN];
1611 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
1612 bufsize = sizeof (struct sockaddr_in);
1613 #else
1614 bufsize = sizeof namebuf;
1615 #endif
1616 #ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
1617 if (bufsize >= 256)
1618 bufsize = 255;
1619 #endif
1620 buffer = SvGROW(bufsv, (STRLEN)(length+1));
1621 /* 'offset' means 'flags' here */
1622 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
1623 (struct sockaddr *)namebuf, &bufsize);
1624 if (count < 0)
1625 RETPUSHUNDEF;
1626 #ifdef EPOC
1627 /* Bogus return without padding */
1628 bufsize = sizeof (struct sockaddr_in);
1629 #endif
1630 SvCUR_set(bufsv, count);
1631 *SvEND(bufsv) = '\0';
1632 (void)SvPOK_only(bufsv);
1633 if (fp_utf8)
1634 SvUTF8_on(bufsv);
1635 SvSETMAGIC(bufsv);
1636 /* This should not be marked tainted if the fp is marked clean */
1637 if (!(IoFLAGS(io) & IOf_UNTAINT))
1638 SvTAINTED_on(bufsv);
1639 SP = ORIGMARK;
1640 sv_setpvn(TARG, namebuf, bufsize);
1641 PUSHs(TARG);
1642 RETURN;
1643 }
1644 #else
1645 if (PL_op->op_type == OP_RECV)
1646 DIE(aTHX_ PL_no_sock_func, "recv");
1647 #endif
1648 if (DO_UTF8(bufsv)) {
1649 /* offset adjust in characters not bytes */
1650 blen = sv_len_utf8(bufsv);
1651 }
1652 if (offset < 0) {
1653 if (-offset > (int)blen)
1654 DIE(aTHX_ "Offset outside string");
1655 offset += blen;
1656 }
1657 if (DO_UTF8(bufsv)) {
1658 /* convert offset-as-chars to offset-as-bytes */
1659 if (offset >= (int)blen)
1660 offset += SvCUR(bufsv) - blen;
1661 else
1662 offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
1663 }
1664 more_bytes:
1665 bufsize = SvCUR(bufsv);
1666 buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
1667 if (offset > bufsize) { /* Zero any newly allocated space */
1668 Zero(buffer+bufsize, offset-bufsize, char);
1669 }
1670 buffer = buffer + offset;
1671
1672 if (PL_op->op_type == OP_SYSREAD) {
1673 #ifdef PERL_SOCK_SYSREAD_IS_RECV
1674 if (IoTYPE(io) == IoTYPE_SOCKET) {
1675 count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
1676 buffer, length, 0);
1677 }
1678 else
1679 #endif
1680 {
1681 count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
1682 buffer, length);
1683 }
1684 }
1685 else
1686 #ifdef HAS_SOCKET__bad_code_maybe
1687 if (IoTYPE(io) == IoTYPE_SOCKET) {
1688 char namebuf[MAXPATHLEN];
1689 #if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
1690 bufsize = sizeof (struct sockaddr_in);
1691 #else
1692 bufsize = sizeof namebuf;
1693 #endif
1694 count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
1695 (struct sockaddr *)namebuf, &bufsize);
1696 }
1697 else
1698 #endif
1699 {
1700 count = PerlIO_read(IoIFP(io), buffer, length);
1701 /* PerlIO_read() - like fread() returns 0 on both error and EOF */
1702 if (count == 0 && PerlIO_error(IoIFP(io)))
1703 count = -1;
1704 }
1705 if (count < 0) {
1706 if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
1707 report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
1708 goto say_undef;
1709 }
1710 SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
1711 *SvEND(bufsv) = '\0';
1712 (void)SvPOK_only(bufsv);
1713 if (fp_utf8 && !IN_BYTES) {
1714 /* Look at utf8 we got back and count the characters */
1715 char *bend = buffer + count;
1716 while (buffer < bend) {
1717 if (charstart) {
1718 skip = UTF8SKIP(buffer);
1719 charskip = 0;
1720 }
1721 if (buffer - charskip + skip > bend) {
1722 /* partial character - try for rest of it */
1723 length = skip - (bend-buffer);
1724 offset = bend - SvPVX(bufsv);
1725 charstart = FALSE;
1726 charskip += count;
1727 goto more_bytes;
1728 }
1729 else {
1730 got++;
1731 buffer += skip;
1732 charstart = TRUE;
1733 charskip = 0;
1734 }
1735 }
1736 /* If we have not 'got' the number of _characters_ we 'wanted' get some more
1737 provided amount read (count) was what was requested (length)
1738 */
1739 if (got < wanted && count == length) {
1740 length = wanted - got;
1741 offset = bend - SvPVX(bufsv);
1742 goto more_bytes;
1743 }
1744 /* return value is character count */
1745 count = got;
1746 SvUTF8_on(bufsv);
1747 }
1748 SvSETMAGIC(bufsv);
1749 /* This should not be marked tainted if the fp is marked clean */
1750 if (!(IoFLAGS(io) & IOf_UNTAINT))
1751 SvTAINTED_on(bufsv);
1752 SP = ORIGMARK;
1753 PUSHi(count);
1754 RETURN;
1755
1756 say_undef:
1757 SP = ORIGMARK;
1758 RETPUSHUNDEF;
1759 }
1760
PP(pp_syswrite)1761 PP(pp_syswrite)
1762 {
1763 dSP;
1764 int items = (SP - PL_stack_base) - TOPMARK;
1765 if (items == 2) {
1766 SV *sv;
1767 EXTEND(SP, 1);
1768 sv = sv_2mortal(newSViv(sv_len(*SP)));
1769 PUSHs(sv);
1770 PUTBACK;
1771 }
1772 return pp_send();
1773 }
1774
PP(pp_send)1775 PP(pp_send)
1776 {
1777 dSP; dMARK; dORIGMARK; dTARGET;
1778 GV *gv;
1779 IO *io;
1780 SV *bufsv;
1781 char *buffer;
1782 Size_t length;
1783 SSize_t retval;
1784 STRLEN blen;
1785 MAGIC *mg;
1786
1787 gv = (GV*)*++MARK;
1788 if (PL_op->op_type == OP_SYSWRITE
1789 && gv && (io = GvIO(gv))
1790 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1791 {
1792 SV *sv;
1793
1794 PUSHMARK(MARK-1);
1795 *MARK = SvTIED_obj((SV*)io, mg);
1796 ENTER;
1797 call_method("WRITE", G_SCALAR);
1798 LEAVE;
1799 SPAGAIN;
1800 sv = POPs;
1801 SP = ORIGMARK;
1802 PUSHs(sv);
1803 RETURN;
1804 }
1805 if (!gv)
1806 goto say_undef;
1807 bufsv = *++MARK;
1808 #if Size_t_size > IVSIZE
1809 length = (Size_t)SvNVx(*++MARK);
1810 #else
1811 length = (Size_t)SvIVx(*++MARK);
1812 #endif
1813 if ((SSize_t)length < 0)
1814 DIE(aTHX_ "Negative length");
1815 SETERRNO(0,0);
1816 io = GvIO(gv);
1817 if (!io || !IoIFP(io)) {
1818 retval = -1;
1819 if (ckWARN(WARN_CLOSED))
1820 report_evil_fh(gv, io, PL_op->op_type);
1821 SETERRNO(EBADF,RMS_IFI);
1822 goto say_undef;
1823 }
1824
1825 if (PerlIO_isutf8(IoIFP(io))) {
1826 if (!SvUTF8(bufsv)) {
1827 bufsv = sv_2mortal(newSVsv(bufsv));
1828 buffer = sv_2pvutf8(bufsv, &blen);
1829 } else
1830 buffer = SvPV(bufsv, blen);
1831 }
1832 else {
1833 if (DO_UTF8(bufsv)) {
1834 /* Not modifying source SV, so making a temporary copy. */
1835 bufsv = sv_2mortal(newSVsv(bufsv));
1836 sv_utf8_downgrade(bufsv, FALSE);
1837 }
1838 buffer = SvPV(bufsv, blen);
1839 }
1840
1841 if (PL_op->op_type == OP_SYSWRITE) {
1842 IV offset;
1843 if (DO_UTF8(bufsv)) {
1844 /* length and offset are in chars */
1845 blen = sv_len_utf8(bufsv);
1846 }
1847 if (MARK < SP) {
1848 offset = SvIVx(*++MARK);
1849 if (offset < 0) {
1850 if (-offset > (IV)blen)
1851 DIE(aTHX_ "Offset outside string");
1852 offset += blen;
1853 } else if (offset >= (IV)blen && blen > 0)
1854 DIE(aTHX_ "Offset outside string");
1855 } else
1856 offset = 0;
1857 if (length > blen - offset)
1858 length = blen - offset;
1859 if (DO_UTF8(bufsv)) {
1860 buffer = (char*)utf8_hop((U8 *)buffer, offset);
1861 length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
1862 }
1863 else {
1864 buffer = buffer+offset;
1865 }
1866 #ifdef PERL_SOCK_SYSWRITE_IS_SEND
1867 if (IoTYPE(io) == IoTYPE_SOCKET) {
1868 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
1869 buffer, length, 0);
1870 }
1871 else
1872 #endif
1873 {
1874 /* See the note at doio.c:do_print about filesize limits. --jhi */
1875 retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
1876 buffer, length);
1877 }
1878 }
1879 #ifdef HAS_SOCKET
1880 else if (SP > MARK) {
1881 char *sockbuf;
1882 STRLEN mlen;
1883 sockbuf = SvPVx(*++MARK, mlen);
1884 /* length is really flags */
1885 retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
1886 length, (struct sockaddr *)sockbuf, mlen);
1887 }
1888 else
1889 /* length is really flags */
1890 retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
1891 #else
1892 else
1893 DIE(aTHX_ PL_no_sock_func, "send");
1894 #endif
1895 if (retval < 0)
1896 goto say_undef;
1897 SP = ORIGMARK;
1898 if (DO_UTF8(bufsv))
1899 retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
1900 #if Size_t_size > IVSIZE
1901 PUSHn(retval);
1902 #else
1903 PUSHi(retval);
1904 #endif
1905 RETURN;
1906
1907 say_undef:
1908 SP = ORIGMARK;
1909 RETPUSHUNDEF;
1910 }
1911
PP(pp_recv)1912 PP(pp_recv)
1913 {
1914 return pp_sysread();
1915 }
1916
PP(pp_eof)1917 PP(pp_eof)
1918 {
1919 dSP;
1920 GV *gv;
1921 IO *io;
1922 MAGIC *mg;
1923
1924 if (MAXARG == 0) {
1925 if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
1926 IO *io;
1927 gv = PL_last_in_gv = GvEGV(PL_argvgv);
1928 io = GvIO(gv);
1929 if (io && !IoIFP(io)) {
1930 if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
1931 IoLINES(io) = 0;
1932 IoFLAGS(io) &= ~IOf_START;
1933 do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
1934 sv_setpvn(GvSV(gv), "-", 1);
1935 SvSETMAGIC(GvSV(gv));
1936 }
1937 else if (!nextargv(gv))
1938 RETPUSHYES;
1939 }
1940 }
1941 else
1942 gv = PL_last_in_gv; /* eof */
1943 }
1944 else
1945 gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
1946
1947 if (gv && (io = GvIO(gv))
1948 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1949 {
1950 PUSHMARK(SP);
1951 XPUSHs(SvTIED_obj((SV*)io, mg));
1952 PUTBACK;
1953 ENTER;
1954 call_method("EOF", G_SCALAR);
1955 LEAVE;
1956 SPAGAIN;
1957 RETURN;
1958 }
1959
1960 PUSHs(boolSV(!gv || do_eof(gv)));
1961 RETURN;
1962 }
1963
PP(pp_tell)1964 PP(pp_tell)
1965 {
1966 dSP; dTARGET;
1967 GV *gv;
1968 IO *io;
1969 MAGIC *mg;
1970
1971 if (MAXARG == 0)
1972 gv = PL_last_in_gv;
1973 else
1974 gv = PL_last_in_gv = (GV*)POPs;
1975
1976 if (gv && (io = GvIO(gv))
1977 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
1978 {
1979 PUSHMARK(SP);
1980 XPUSHs(SvTIED_obj((SV*)io, mg));
1981 PUTBACK;
1982 ENTER;
1983 call_method("TELL", G_SCALAR);
1984 LEAVE;
1985 SPAGAIN;
1986 RETURN;
1987 }
1988
1989 #if LSEEKSIZE > IVSIZE
1990 PUSHn( do_tell(gv) );
1991 #else
1992 PUSHi( do_tell(gv) );
1993 #endif
1994 RETURN;
1995 }
1996
PP(pp_seek)1997 PP(pp_seek)
1998 {
1999 return pp_sysseek();
2000 }
2001
PP(pp_sysseek)2002 PP(pp_sysseek)
2003 {
2004 dSP;
2005 GV *gv;
2006 IO *io;
2007 int whence = POPi;
2008 #if LSEEKSIZE > IVSIZE
2009 Off_t offset = (Off_t)SvNVx(POPs);
2010 #else
2011 Off_t offset = (Off_t)SvIVx(POPs);
2012 #endif
2013 MAGIC *mg;
2014
2015 gv = PL_last_in_gv = (GV*)POPs;
2016
2017 if (gv && (io = GvIO(gv))
2018 && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
2019 {
2020 PUSHMARK(SP);
2021 XPUSHs(SvTIED_obj((SV*)io, mg));
2022 #if LSEEKSIZE > IVSIZE
2023 XPUSHs(sv_2mortal(newSVnv((NV) offset)));
2024 #else
2025 XPUSHs(sv_2mortal(newSViv(offset)));
2026 #endif
2027 XPUSHs(sv_2mortal(newSViv(whence)));
2028 PUTBACK;
2029 ENTER;
2030 call_method("SEEK", G_SCALAR);
2031 LEAVE;
2032 SPAGAIN;
2033 RETURN;
2034 }
2035
2036 if (PL_op->op_type == OP_SEEK)
2037 PUSHs(boolSV(do_seek(gv, offset, whence)));
2038 else {
2039 Off_t sought = do_sysseek(gv, offset, whence);
2040 if (sought < 0)
2041 PUSHs(&PL_sv_undef);
2042 else {
2043 SV* sv = sought ?
2044 #if LSEEKSIZE > IVSIZE
2045 newSVnv((NV)sought)
2046 #else
2047 newSViv(sought)
2048 #endif
2049 : newSVpvn(zero_but_true, ZBTLEN);
2050 PUSHs(sv_2mortal(sv));
2051 }
2052 }
2053 RETURN;
2054 }
2055
PP(pp_truncate)2056 PP(pp_truncate)
2057 {
2058 dSP;
2059 /* There seems to be no consensus on the length type of truncate()
2060 * and ftruncate(), both off_t and size_t have supporters. In
2061 * general one would think that when using large files, off_t is
2062 * at least as wide as size_t, so using an off_t should be okay. */
2063 /* XXX Configure probe for the length type of *truncate() needed XXX */
2064 Off_t len;
2065
2066 #if Off_t_size > IVSIZE
2067 len = (Off_t)POPn;
2068 #else
2069 len = (Off_t)POPi;
2070 #endif
2071 /* Checking for length < 0 is problematic as the type might or
2072 * might not be signed: if it is not, clever compilers will moan. */
2073 /* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
2074 SETERRNO(0,0);
2075 #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) || defined(F_FREESP)
2076 {
2077 STRLEN n_a;
2078 int result = 1;
2079 GV *tmpgv;
2080 IO *io;
2081
2082 if (PL_op->op_flags & OPf_SPECIAL) {
2083 tmpgv = gv_fetchpv(POPpx, FALSE, SVt_PVIO);
2084
2085 do_ftruncate_gv:
2086 if (!GvIO(tmpgv))
2087 result = 0;
2088 else {
2089 PerlIO *fp;
2090 io = GvIOp(tmpgv);
2091 do_ftruncate_io:
2092 TAINT_PROPER("truncate");
2093 if (!(fp = IoIFP(io))) {
2094 result = 0;
2095 }
2096 else {
2097 PerlIO_flush(fp);
2098 #ifdef HAS_TRUNCATE
2099 if (ftruncate(PerlIO_fileno(fp), len) < 0)
2100 #else
2101 if (my_chsize(PerlIO_fileno(fp), len) < 0)
2102 #endif
2103 result = 0;
2104 }
2105 }
2106 }
2107 else {
2108 SV *sv = POPs;
2109 char *name;
2110
2111 if (SvTYPE(sv) == SVt_PVGV) {
2112 tmpgv = (GV*)sv; /* *main::FRED for example */
2113 goto do_ftruncate_gv;
2114 }
2115 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2116 tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
2117 goto do_ftruncate_gv;
2118 }
2119 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
2120 io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
2121 goto do_ftruncate_io;
2122 }
2123
2124 name = SvPV(sv, n_a);
2125 TAINT_PROPER("truncate");
2126 #ifdef HAS_TRUNCATE
2127 if (truncate(name, len) < 0)
2128 result = 0;
2129 #else
2130 {
2131 int tmpfd;
2132
2133 if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
2134 result = 0;
2135 else {
2136 if (my_chsize(tmpfd, len) < 0)
2137 result = 0;
2138 PerlLIO_close(tmpfd);
2139 }
2140 }
2141 #endif
2142 }
2143
2144 if (result)
2145 RETPUSHYES;
2146 if (!errno)
2147 SETERRNO(EBADF,RMS_IFI);
2148 RETPUSHUNDEF;
2149 }
2150 #else
2151 DIE(aTHX_ "truncate not implemented");
2152 #endif
2153 }
2154
PP(pp_fcntl)2155 PP(pp_fcntl)
2156 {
2157 return pp_ioctl();
2158 }
2159
PP(pp_ioctl)2160 PP(pp_ioctl)
2161 {
2162 dSP; dTARGET;
2163 SV *argsv = POPs;
2164 unsigned int func = POPu;
2165 int optype = PL_op->op_type;
2166 char *s;
2167 IV retval;
2168 GV *gv = (GV*)POPs;
2169 IO *io = gv ? GvIOn(gv) : 0;
2170
2171 if (!io || !argsv || !IoIFP(io)) {
2172 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2173 report_evil_fh(gv, io, PL_op->op_type);
2174 SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
2175 RETPUSHUNDEF;
2176 }
2177
2178 if (SvPOK(argsv) || !SvNIOK(argsv)) {
2179 STRLEN len;
2180 STRLEN need;
2181 s = SvPV_force(argsv, len);
2182 need = IOCPARM_LEN(func);
2183 if (len < need) {
2184 s = Sv_Grow(argsv, need + 1);
2185 SvCUR_set(argsv, need);
2186 }
2187
2188 s[SvCUR(argsv)] = 17; /* a little sanity check here */
2189 }
2190 else {
2191 retval = SvIV(argsv);
2192 s = INT2PTR(char*,retval); /* ouch */
2193 }
2194
2195 TAINT_PROPER(optype == OP_IOCTL ? "ioctl" : "fcntl");
2196
2197 if (optype == OP_IOCTL)
2198 #ifdef HAS_IOCTL
2199 retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
2200 #else
2201 DIE(aTHX_ "ioctl is not implemented");
2202 #endif
2203 else
2204 #ifndef HAS_FCNTL
2205 DIE(aTHX_ "fcntl is not implemented");
2206 #else
2207 #if defined(OS2) && defined(__EMX__)
2208 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
2209 #else
2210 retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
2211 #endif
2212 #endif
2213
2214 #if defined(HAS_IOCTL) || defined(HAS_FCNTL)
2215 if (SvPOK(argsv)) {
2216 if (s[SvCUR(argsv)] != 17)
2217 DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
2218 OP_NAME(PL_op));
2219 s[SvCUR(argsv)] = 0; /* put our null back */
2220 SvSETMAGIC(argsv); /* Assume it has changed */
2221 }
2222
2223 if (retval == -1)
2224 RETPUSHUNDEF;
2225 if (retval != 0) {
2226 PUSHi(retval);
2227 }
2228 else {
2229 PUSHp(zero_but_true, ZBTLEN);
2230 }
2231 #endif
2232 RETURN;
2233 }
2234
PP(pp_flock)2235 PP(pp_flock)
2236 {
2237 #ifdef FLOCK
2238 dSP; dTARGET;
2239 I32 value;
2240 int argtype;
2241 GV *gv;
2242 IO *io = NULL;
2243 PerlIO *fp;
2244
2245 argtype = POPi;
2246 if (MAXARG == 0)
2247 gv = PL_last_in_gv;
2248 else
2249 gv = (GV*)POPs;
2250 if (gv && (io = GvIO(gv)))
2251 fp = IoIFP(io);
2252 else {
2253 fp = Nullfp;
2254 io = NULL;
2255 }
2256 if (fp) {
2257 (void)PerlIO_flush(fp);
2258 value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
2259 }
2260 else {
2261 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2262 report_evil_fh(gv, io, PL_op->op_type);
2263 value = 0;
2264 SETERRNO(EBADF,RMS_IFI);
2265 }
2266 PUSHi(value);
2267 RETURN;
2268 #else
2269 DIE(aTHX_ PL_no_func, "flock()");
2270 #endif
2271 }
2272
2273 /* Sockets. */
2274
PP(pp_socket)2275 PP(pp_socket)
2276 {
2277 #ifdef HAS_SOCKET
2278 dSP;
2279 GV *gv;
2280 register IO *io;
2281 int protocol = POPi;
2282 int type = POPi;
2283 int domain = POPi;
2284 int fd;
2285
2286 gv = (GV*)POPs;
2287 io = gv ? GvIOn(gv) : NULL;
2288
2289 if (!gv || !io) {
2290 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2291 report_evil_fh(gv, io, PL_op->op_type);
2292 if (IoIFP(io))
2293 do_close(gv, FALSE);
2294 SETERRNO(EBADF,LIB_INVARG);
2295 RETPUSHUNDEF;
2296 }
2297
2298 if (IoIFP(io))
2299 do_close(gv, FALSE);
2300
2301 TAINT_PROPER("socket");
2302 fd = PerlSock_socket(domain, type, protocol);
2303 if (fd < 0)
2304 RETPUSHUNDEF;
2305 IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
2306 IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2307 IoTYPE(io) = IoTYPE_SOCKET;
2308 if (!IoIFP(io) || !IoOFP(io)) {
2309 if (IoIFP(io)) PerlIO_close(IoIFP(io));
2310 if (IoOFP(io)) PerlIO_close(IoOFP(io));
2311 if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
2312 RETPUSHUNDEF;
2313 }
2314 #if defined(HAS_FCNTL) && defined(F_SETFD)
2315 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2316 #endif
2317
2318 #ifdef EPOC
2319 setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
2320 #endif
2321
2322 RETPUSHYES;
2323 #else
2324 DIE(aTHX_ PL_no_sock_func, "socket");
2325 #endif
2326 }
2327
PP(pp_sockpair)2328 PP(pp_sockpair)
2329 {
2330 #if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
2331 dSP;
2332 GV *gv1;
2333 GV *gv2;
2334 register IO *io1;
2335 register IO *io2;
2336 int protocol = POPi;
2337 int type = POPi;
2338 int domain = POPi;
2339 int fd[2];
2340
2341 gv2 = (GV*)POPs;
2342 gv1 = (GV*)POPs;
2343 io1 = gv1 ? GvIOn(gv1) : NULL;
2344 io2 = gv2 ? GvIOn(gv2) : NULL;
2345 if (!gv1 || !gv2 || !io1 || !io2) {
2346 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
2347 if (!gv1 || !io1)
2348 report_evil_fh(gv1, io1, PL_op->op_type);
2349 if (!gv2 || !io2)
2350 report_evil_fh(gv1, io2, PL_op->op_type);
2351 }
2352 if (IoIFP(io1))
2353 do_close(gv1, FALSE);
2354 if (IoIFP(io2))
2355 do_close(gv2, FALSE);
2356 RETPUSHUNDEF;
2357 }
2358
2359 if (IoIFP(io1))
2360 do_close(gv1, FALSE);
2361 if (IoIFP(io2))
2362 do_close(gv2, FALSE);
2363
2364 TAINT_PROPER("socketpair");
2365 if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
2366 RETPUSHUNDEF;
2367 IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
2368 IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
2369 IoTYPE(io1) = IoTYPE_SOCKET;
2370 IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
2371 IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
2372 IoTYPE(io2) = IoTYPE_SOCKET;
2373 if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
2374 if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
2375 if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
2376 if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
2377 if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
2378 if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
2379 if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
2380 RETPUSHUNDEF;
2381 }
2382 #if defined(HAS_FCNTL) && defined(F_SETFD)
2383 fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
2384 fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
2385 #endif
2386
2387 RETPUSHYES;
2388 #else
2389 DIE(aTHX_ PL_no_sock_func, "socketpair");
2390 #endif
2391 }
2392
PP(pp_bind)2393 PP(pp_bind)
2394 {
2395 #ifdef HAS_SOCKET
2396 dSP;
2397 #ifdef MPE /* Requires PRIV mode to bind() to ports < 1024 */
2398 extern void GETPRIVMODE();
2399 extern void GETUSERMODE();
2400 #endif
2401 SV *addrsv = POPs;
2402 char *addr;
2403 GV *gv = (GV*)POPs;
2404 register IO *io = GvIOn(gv);
2405 STRLEN len;
2406 int bind_ok = 0;
2407 #ifdef MPE
2408 int mpeprivmode = 0;
2409 #endif
2410
2411 if (!io || !IoIFP(io))
2412 goto nuts;
2413
2414 addr = SvPV(addrsv, len);
2415 TAINT_PROPER("bind");
2416 #ifdef MPE /* Deal with MPE bind() peculiarities */
2417 if (((struct sockaddr *)addr)->sa_family == AF_INET) {
2418 /* The address *MUST* stupidly be zero. */
2419 ((struct sockaddr_in *)addr)->sin_addr.s_addr = INADDR_ANY;
2420 /* PRIV mode is required to bind() to ports < 1024. */
2421 if (((struct sockaddr_in *)addr)->sin_port < 1024 &&
2422 ((struct sockaddr_in *)addr)->sin_port > 0) {
2423 GETPRIVMODE(); /* If this fails, we are aborted by MPE/iX. */
2424 mpeprivmode = 1;
2425 }
2426 }
2427 #endif /* MPE */
2428 if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
2429 (struct sockaddr *)addr, len) >= 0)
2430 bind_ok = 1;
2431
2432 #ifdef MPE /* Switch back to USER mode */
2433 if (mpeprivmode)
2434 GETUSERMODE();
2435 #endif /* MPE */
2436
2437 if (bind_ok)
2438 RETPUSHYES;
2439 else
2440 RETPUSHUNDEF;
2441
2442 nuts:
2443 if (ckWARN(WARN_CLOSED))
2444 report_evil_fh(gv, io, PL_op->op_type);
2445 SETERRNO(EBADF,SS_IVCHAN);
2446 RETPUSHUNDEF;
2447 #else
2448 DIE(aTHX_ PL_no_sock_func, "bind");
2449 #endif
2450 }
2451
PP(pp_connect)2452 PP(pp_connect)
2453 {
2454 #ifdef HAS_SOCKET
2455 dSP;
2456 SV *addrsv = POPs;
2457 char *addr;
2458 GV *gv = (GV*)POPs;
2459 register IO *io = GvIOn(gv);
2460 STRLEN len;
2461
2462 if (!io || !IoIFP(io))
2463 goto nuts;
2464
2465 addr = SvPV(addrsv, len);
2466 TAINT_PROPER("connect");
2467 if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
2468 RETPUSHYES;
2469 else
2470 RETPUSHUNDEF;
2471
2472 nuts:
2473 if (ckWARN(WARN_CLOSED))
2474 report_evil_fh(gv, io, PL_op->op_type);
2475 SETERRNO(EBADF,SS_IVCHAN);
2476 RETPUSHUNDEF;
2477 #else
2478 DIE(aTHX_ PL_no_sock_func, "connect");
2479 #endif
2480 }
2481
PP(pp_listen)2482 PP(pp_listen)
2483 {
2484 #ifdef HAS_SOCKET
2485 dSP;
2486 int backlog = POPi;
2487 GV *gv = (GV*)POPs;
2488 register IO *io = gv ? GvIOn(gv) : NULL;
2489
2490 if (!gv || !io || !IoIFP(io))
2491 goto nuts;
2492
2493 if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
2494 RETPUSHYES;
2495 else
2496 RETPUSHUNDEF;
2497
2498 nuts:
2499 if (ckWARN(WARN_CLOSED))
2500 report_evil_fh(gv, io, PL_op->op_type);
2501 SETERRNO(EBADF,SS_IVCHAN);
2502 RETPUSHUNDEF;
2503 #else
2504 DIE(aTHX_ PL_no_sock_func, "listen");
2505 #endif
2506 }
2507
PP(pp_accept)2508 PP(pp_accept)
2509 {
2510 #ifdef HAS_SOCKET
2511 dSP; dTARGET;
2512 GV *ngv;
2513 GV *ggv;
2514 register IO *nstio;
2515 register IO *gstio;
2516 char namebuf[MAXPATHLEN];
2517 #if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
2518 Sock_size_t len = sizeof (struct sockaddr_in);
2519 #else
2520 Sock_size_t len = sizeof namebuf;
2521 #endif
2522 int fd;
2523
2524 ggv = (GV*)POPs;
2525 ngv = (GV*)POPs;
2526
2527 if (!ngv)
2528 goto badexit;
2529 if (!ggv)
2530 goto nuts;
2531
2532 gstio = GvIO(ggv);
2533 if (!gstio || !IoIFP(gstio))
2534 goto nuts;
2535
2536 nstio = GvIOn(ngv);
2537 fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
2538 if (fd < 0)
2539 goto badexit;
2540 if (IoIFP(nstio))
2541 do_close(ngv, FALSE);
2542 IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
2543 IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
2544 IoTYPE(nstio) = IoTYPE_SOCKET;
2545 if (!IoIFP(nstio) || !IoOFP(nstio)) {
2546 if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
2547 if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
2548 if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
2549 goto badexit;
2550 }
2551 #if defined(HAS_FCNTL) && defined(F_SETFD)
2552 fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
2553 #endif
2554
2555 #ifdef EPOC
2556 len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
2557 setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
2558 #endif
2559 #ifdef __SCO_VERSION__
2560 len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
2561 #endif
2562
2563 PUSHp(namebuf, len);
2564 RETURN;
2565
2566 nuts:
2567 if (ckWARN(WARN_CLOSED))
2568 report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
2569 SETERRNO(EBADF,SS_IVCHAN);
2570
2571 badexit:
2572 RETPUSHUNDEF;
2573
2574 #else
2575 DIE(aTHX_ PL_no_sock_func, "accept");
2576 #endif
2577 }
2578
PP(pp_shutdown)2579 PP(pp_shutdown)
2580 {
2581 #ifdef HAS_SOCKET
2582 dSP; dTARGET;
2583 int how = POPi;
2584 GV *gv = (GV*)POPs;
2585 register IO *io = GvIOn(gv);
2586
2587 if (!io || !IoIFP(io))
2588 goto nuts;
2589
2590 PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
2591 RETURN;
2592
2593 nuts:
2594 if (ckWARN(WARN_CLOSED))
2595 report_evil_fh(gv, io, PL_op->op_type);
2596 SETERRNO(EBADF,SS_IVCHAN);
2597 RETPUSHUNDEF;
2598 #else
2599 DIE(aTHX_ PL_no_sock_func, "shutdown");
2600 #endif
2601 }
2602
PP(pp_gsockopt)2603 PP(pp_gsockopt)
2604 {
2605 #ifdef HAS_SOCKET
2606 return pp_ssockopt();
2607 #else
2608 DIE(aTHX_ PL_no_sock_func, "getsockopt");
2609 #endif
2610 }
2611
PP(pp_ssockopt)2612 PP(pp_ssockopt)
2613 {
2614 #ifdef HAS_SOCKET
2615 dSP;
2616 int optype = PL_op->op_type;
2617 SV *sv;
2618 int fd;
2619 unsigned int optname;
2620 unsigned int lvl;
2621 GV *gv;
2622 register IO *io;
2623 Sock_size_t len;
2624
2625 if (optype == OP_GSOCKOPT)
2626 sv = sv_2mortal(NEWSV(22, 257));
2627 else
2628 sv = POPs;
2629 optname = (unsigned int) POPi;
2630 lvl = (unsigned int) POPi;
2631
2632 gv = (GV*)POPs;
2633 io = GvIOn(gv);
2634 if (!io || !IoIFP(io))
2635 goto nuts;
2636
2637 fd = PerlIO_fileno(IoIFP(io));
2638 switch (optype) {
2639 case OP_GSOCKOPT:
2640 SvGROW(sv, 257);
2641 (void)SvPOK_only(sv);
2642 SvCUR_set(sv,256);
2643 *SvEND(sv) ='\0';
2644 len = SvCUR(sv);
2645 if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
2646 goto nuts2;
2647 SvCUR_set(sv, len);
2648 *SvEND(sv) ='\0';
2649 PUSHs(sv);
2650 break;
2651 case OP_SSOCKOPT: {
2652 char *buf;
2653 int aint;
2654 if (SvPOKp(sv)) {
2655 STRLEN l;
2656 buf = SvPV(sv, l);
2657 len = l;
2658 }
2659 else {
2660 aint = (int)SvIV(sv);
2661 buf = (char*)&aint;
2662 len = sizeof(int);
2663 }
2664 if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
2665 goto nuts2;
2666 PUSHs(&PL_sv_yes);
2667 }
2668 break;
2669 }
2670 RETURN;
2671
2672 nuts:
2673 if (ckWARN(WARN_CLOSED))
2674 report_evil_fh(gv, io, optype);
2675 SETERRNO(EBADF,SS_IVCHAN);
2676 nuts2:
2677 RETPUSHUNDEF;
2678
2679 #else
2680 DIE(aTHX_ PL_no_sock_func, "setsockopt");
2681 #endif
2682 }
2683
PP(pp_getsockname)2684 PP(pp_getsockname)
2685 {
2686 #ifdef HAS_SOCKET
2687 return pp_getpeername();
2688 #else
2689 DIE(aTHX_ PL_no_sock_func, "getsockname");
2690 #endif
2691 }
2692
PP(pp_getpeername)2693 PP(pp_getpeername)
2694 {
2695 #ifdef HAS_SOCKET
2696 dSP;
2697 int optype = PL_op->op_type;
2698 SV *sv;
2699 int fd;
2700 GV *gv = (GV*)POPs;
2701 register IO *io = GvIOn(gv);
2702 Sock_size_t len;
2703
2704 if (!io || !IoIFP(io))
2705 goto nuts;
2706
2707 sv = sv_2mortal(NEWSV(22, 257));
2708 (void)SvPOK_only(sv);
2709 len = 256;
2710 SvCUR_set(sv, len);
2711 *SvEND(sv) ='\0';
2712 fd = PerlIO_fileno(IoIFP(io));
2713 switch (optype) {
2714 case OP_GETSOCKNAME:
2715 if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2716 goto nuts2;
2717 break;
2718 case OP_GETPEERNAME:
2719 if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
2720 goto nuts2;
2721 #if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
2722 {
2723 static const char nowhere[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
2724 /* If the call succeeded, make sure we don't have a zeroed port/addr */
2725 if (((struct sockaddr *)SvPVX(sv))->sa_family == AF_INET &&
2726 !memcmp((char *)SvPVX(sv) + sizeof(u_short), nowhere,
2727 sizeof(u_short) + sizeof(struct in_addr))) {
2728 goto nuts2;
2729 }
2730 }
2731 #endif
2732 break;
2733 }
2734 #ifdef BOGUS_GETNAME_RETURN
2735 /* Interactive Unix, getpeername() and getsockname()
2736 does not return valid namelen */
2737 if (len == BOGUS_GETNAME_RETURN)
2738 len = sizeof(struct sockaddr);
2739 #endif
2740 SvCUR_set(sv, len);
2741 *SvEND(sv) ='\0';
2742 PUSHs(sv);
2743 RETURN;
2744
2745 nuts:
2746 if (ckWARN(WARN_CLOSED))
2747 report_evil_fh(gv, io, optype);
2748 SETERRNO(EBADF,SS_IVCHAN);
2749 nuts2:
2750 RETPUSHUNDEF;
2751
2752 #else
2753 DIE(aTHX_ PL_no_sock_func, "getpeername");
2754 #endif
2755 }
2756
2757 /* Stat calls. */
2758
PP(pp_lstat)2759 PP(pp_lstat)
2760 {
2761 return pp_stat();
2762 }
2763
PP(pp_stat)2764 PP(pp_stat)
2765 {
2766 dSP;
2767 GV *gv;
2768 I32 gimme;
2769 I32 max = 13;
2770 STRLEN n_a;
2771
2772 if (PL_op->op_flags & OPf_REF) {
2773 gv = cGVOP_gv;
2774 if (PL_op->op_type == OP_LSTAT) {
2775 if (gv != PL_defgv) {
2776 if (ckWARN(WARN_IO))
2777 Perl_warner(aTHX_ packWARN(WARN_IO),
2778 "lstat() on filehandle %s", GvENAME(gv));
2779 } else if (PL_laststype != OP_LSTAT)
2780 Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
2781 }
2782
2783 do_fstat:
2784 if (gv != PL_defgv) {
2785 PL_laststype = OP_STAT;
2786 PL_statgv = gv;
2787 sv_setpv(PL_statname, "");
2788 PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
2789 ? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
2790 }
2791 if (PL_laststatval < 0) {
2792 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
2793 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
2794 max = 0;
2795 }
2796 }
2797 else {
2798 SV* sv = POPs;
2799 if (SvTYPE(sv) == SVt_PVGV) {
2800 gv = (GV*)sv;
2801 goto do_fstat;
2802 }
2803 else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
2804 gv = (GV*)SvRV(sv);
2805 if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO))
2806 Perl_warner(aTHX_ packWARN(WARN_IO),
2807 "lstat() on filehandle %s", GvENAME(gv));
2808 goto do_fstat;
2809 }
2810 sv_setpv(PL_statname, SvPV(sv,n_a));
2811 PL_statgv = Nullgv;
2812 #ifdef HAS_LSTAT
2813 PL_laststype = PL_op->op_type;
2814 if (PL_op->op_type == OP_LSTAT)
2815 PL_laststatval = PerlLIO_lstat(SvPV(PL_statname, n_a), &PL_statcache);
2816 else
2817 #endif
2818 PL_laststatval = PerlLIO_stat(SvPV(PL_statname, n_a), &PL_statcache);
2819 if (PL_laststatval < 0) {
2820 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
2821 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
2822 max = 0;
2823 }
2824 }
2825
2826 gimme = GIMME_V;
2827 if (gimme != G_ARRAY) {
2828 if (gimme != G_VOID)
2829 XPUSHs(boolSV(max));
2830 RETURN;
2831 }
2832 if (max) {
2833 EXTEND(SP, max);
2834 EXTEND_MORTAL(max);
2835 PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
2836 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
2837 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
2838 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
2839 #if Uid_t_size > IVSIZE
2840 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
2841 #else
2842 # if Uid_t_sign <= 0
2843 PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
2844 # else
2845 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
2846 # endif
2847 #endif
2848 #if Gid_t_size > IVSIZE
2849 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
2850 #else
2851 # if Gid_t_sign <= 0
2852 PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
2853 # else
2854 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
2855 # endif
2856 #endif
2857 #ifdef USE_STAT_RDEV
2858 PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
2859 #else
2860 PUSHs(sv_2mortal(newSVpvn("", 0)));
2861 #endif
2862 #if Off_t_size > IVSIZE
2863 PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
2864 #else
2865 PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
2866 #endif
2867 #ifdef BIG_TIME
2868 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
2869 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
2870 PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
2871 #else
2872 PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
2873 PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
2874 PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
2875 #endif
2876 #ifdef USE_STAT_BLOCKS
2877 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
2878 PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
2879 #else
2880 PUSHs(sv_2mortal(newSVpvn("", 0)));
2881 PUSHs(sv_2mortal(newSVpvn("", 0)));
2882 #endif
2883 }
2884 RETURN;
2885 }
2886
PP(pp_ftrread)2887 PP(pp_ftrread)
2888 {
2889 I32 result;
2890 dSP;
2891 #if defined(HAS_ACCESS) && defined(R_OK)
2892 STRLEN n_a;
2893 if ((PL_op->op_private & OPpFT_ACCESS) && SvPOK(TOPs)) {
2894 result = access(POPpx, R_OK);
2895 if (result == 0)
2896 RETPUSHYES;
2897 if (result < 0)
2898 RETPUSHUNDEF;
2899 RETPUSHNO;
2900 }
2901 else
2902 result = my_stat();
2903 #else
2904 result = my_stat();
2905 #endif
2906 SPAGAIN;
2907 if (result < 0)
2908 RETPUSHUNDEF;
2909 if (cando(S_IRUSR, 0, &PL_statcache))
2910 RETPUSHYES;
2911 RETPUSHNO;
2912 }
2913
PP(pp_ftrwrite)2914 PP(pp_ftrwrite)
2915 {
2916 I32 result;
2917 dSP;
2918 #if defined(HAS_ACCESS) && defined(W_OK)
2919 STRLEN n_a;
2920 if ((PL_op->op_private & OPpFT_ACCESS) && SvPOK(TOPs)) {
2921 result = access(POPpx, W_OK);
2922 if (result == 0)
2923 RETPUSHYES;
2924 if (result < 0)
2925 RETPUSHUNDEF;
2926 RETPUSHNO;
2927 }
2928 else
2929 result = my_stat();
2930 #else
2931 result = my_stat();
2932 #endif
2933 SPAGAIN;
2934 if (result < 0)
2935 RETPUSHUNDEF;
2936 if (cando(S_IWUSR, 0, &PL_statcache))
2937 RETPUSHYES;
2938 RETPUSHNO;
2939 }
2940
PP(pp_ftrexec)2941 PP(pp_ftrexec)
2942 {
2943 I32 result;
2944 dSP;
2945 #if defined(HAS_ACCESS) && defined(X_OK)
2946 STRLEN n_a;
2947 if ((PL_op->op_private & OPpFT_ACCESS) && SvPOK(TOPs)) {
2948 result = access(POPpx, X_OK);
2949 if (result == 0)
2950 RETPUSHYES;
2951 if (result < 0)
2952 RETPUSHUNDEF;
2953 RETPUSHNO;
2954 }
2955 else
2956 result = my_stat();
2957 #else
2958 result = my_stat();
2959 #endif
2960 SPAGAIN;
2961 if (result < 0)
2962 RETPUSHUNDEF;
2963 if (cando(S_IXUSR, 0, &PL_statcache))
2964 RETPUSHYES;
2965 RETPUSHNO;
2966 }
2967
PP(pp_fteread)2968 PP(pp_fteread)
2969 {
2970 I32 result;
2971 dSP;
2972 #ifdef PERL_EFF_ACCESS_R_OK
2973 STRLEN n_a;
2974 if ((PL_op->op_private & OPpFT_ACCESS) && SvPOK(TOPs)) {
2975 result = PERL_EFF_ACCESS_R_OK(POPpx);
2976 if (result == 0)
2977 RETPUSHYES;
2978 if (result < 0)
2979 RETPUSHUNDEF;
2980 RETPUSHNO;
2981 }
2982 else
2983 result = my_stat();
2984 #else
2985 result = my_stat();
2986 #endif
2987 SPAGAIN;
2988 if (result < 0)
2989 RETPUSHUNDEF;
2990 if (cando(S_IRUSR, 1, &PL_statcache))
2991 RETPUSHYES;
2992 RETPUSHNO;
2993 }
2994
PP(pp_ftewrite)2995 PP(pp_ftewrite)
2996 {
2997 I32 result;
2998 dSP;
2999 #ifdef PERL_EFF_ACCESS_W_OK
3000 STRLEN n_a;
3001 if ((PL_op->op_private & OPpFT_ACCESS) && SvPOK(TOPs)) {
3002 result = PERL_EFF_ACCESS_W_OK(POPpx);
3003 if (result == 0)
3004 RETPUSHYES;
3005 if (result < 0)
3006 RETPUSHUNDEF;
3007 RETPUSHNO;
3008 }
3009 else
3010 result = my_stat();
3011 #else
3012 result = my_stat();
3013 #endif
3014 SPAGAIN;
3015 if (result < 0)
3016 RETPUSHUNDEF;
3017 if (cando(S_IWUSR, 1, &PL_statcache))
3018 RETPUSHYES;
3019 RETPUSHNO;
3020 }
3021
PP(pp_fteexec)3022 PP(pp_fteexec)
3023 {
3024 I32 result;
3025 dSP;
3026 #ifdef PERL_EFF_ACCESS_X_OK
3027 STRLEN n_a;
3028 if ((PL_op->op_private & OPpFT_ACCESS) && SvPOK(TOPs)) {
3029 result = PERL_EFF_ACCESS_X_OK(POPpx);
3030 if (result == 0)
3031 RETPUSHYES;
3032 if (result < 0)
3033 RETPUSHUNDEF;
3034 RETPUSHNO;
3035 }
3036 else
3037 result = my_stat();
3038 #else
3039 result = my_stat();
3040 #endif
3041 SPAGAIN;
3042 if (result < 0)
3043 RETPUSHUNDEF;
3044 if (cando(S_IXUSR, 1, &PL_statcache))
3045 RETPUSHYES;
3046 RETPUSHNO;
3047 }
3048
PP(pp_ftis)3049 PP(pp_ftis)
3050 {
3051 I32 result = my_stat();
3052 dSP;
3053 if (result < 0)
3054 RETPUSHUNDEF;
3055 RETPUSHYES;
3056 }
3057
PP(pp_fteowned)3058 PP(pp_fteowned)
3059 {
3060 return pp_ftrowned();
3061 }
3062
PP(pp_ftrowned)3063 PP(pp_ftrowned)
3064 {
3065 I32 result = my_stat();
3066 dSP;
3067 if (result < 0)
3068 RETPUSHUNDEF;
3069 if (PL_statcache.st_uid == (PL_op->op_type == OP_FTEOWNED ?
3070 PL_euid : PL_uid) )
3071 RETPUSHYES;
3072 RETPUSHNO;
3073 }
3074
PP(pp_ftzero)3075 PP(pp_ftzero)
3076 {
3077 I32 result = my_stat();
3078 dSP;
3079 if (result < 0)
3080 RETPUSHUNDEF;
3081 if (PL_statcache.st_size == 0)
3082 RETPUSHYES;
3083 RETPUSHNO;
3084 }
3085
PP(pp_ftsize)3086 PP(pp_ftsize)
3087 {
3088 I32 result = my_stat();
3089 dSP; dTARGET;
3090 if (result < 0)
3091 RETPUSHUNDEF;
3092 #if Off_t_size > IVSIZE
3093 PUSHn(PL_statcache.st_size);
3094 #else
3095 PUSHi(PL_statcache.st_size);
3096 #endif
3097 RETURN;
3098 }
3099
PP(pp_ftmtime)3100 PP(pp_ftmtime)
3101 {
3102 I32 result = my_stat();
3103 dSP; dTARGET;
3104 if (result < 0)
3105 RETPUSHUNDEF;
3106 PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
3107 RETURN;
3108 }
3109
PP(pp_ftatime)3110 PP(pp_ftatime)
3111 {
3112 I32 result = my_stat();
3113 dSP; dTARGET;
3114 if (result < 0)
3115 RETPUSHUNDEF;
3116 PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
3117 RETURN;
3118 }
3119
PP(pp_ftctime)3120 PP(pp_ftctime)
3121 {
3122 I32 result = my_stat();
3123 dSP; dTARGET;
3124 if (result < 0)
3125 RETPUSHUNDEF;
3126 PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
3127 RETURN;
3128 }
3129
PP(pp_ftsock)3130 PP(pp_ftsock)
3131 {
3132 I32 result = my_stat();
3133 dSP;
3134 if (result < 0)
3135 RETPUSHUNDEF;
3136 if (S_ISSOCK(PL_statcache.st_mode))
3137 RETPUSHYES;
3138 RETPUSHNO;
3139 }
3140
PP(pp_ftchr)3141 PP(pp_ftchr)
3142 {
3143 I32 result = my_stat();
3144 dSP;
3145 if (result < 0)
3146 RETPUSHUNDEF;
3147 if (S_ISCHR(PL_statcache.st_mode))
3148 RETPUSHYES;
3149 RETPUSHNO;
3150 }
3151
PP(pp_ftblk)3152 PP(pp_ftblk)
3153 {
3154 I32 result = my_stat();
3155 dSP;
3156 if (result < 0)
3157 RETPUSHUNDEF;
3158 if (S_ISBLK(PL_statcache.st_mode))
3159 RETPUSHYES;
3160 RETPUSHNO;
3161 }
3162
PP(pp_ftfile)3163 PP(pp_ftfile)
3164 {
3165 I32 result = my_stat();
3166 dSP;
3167 if (result < 0)
3168 RETPUSHUNDEF;
3169 if (S_ISREG(PL_statcache.st_mode))
3170 RETPUSHYES;
3171 RETPUSHNO;
3172 }
3173
PP(pp_ftdir)3174 PP(pp_ftdir)
3175 {
3176 I32 result = my_stat();
3177 dSP;
3178 if (result < 0)
3179 RETPUSHUNDEF;
3180 if (S_ISDIR(PL_statcache.st_mode))
3181 RETPUSHYES;
3182 RETPUSHNO;
3183 }
3184
PP(pp_ftpipe)3185 PP(pp_ftpipe)
3186 {
3187 I32 result = my_stat();
3188 dSP;
3189 if (result < 0)
3190 RETPUSHUNDEF;
3191 if (S_ISFIFO(PL_statcache.st_mode))
3192 RETPUSHYES;
3193 RETPUSHNO;
3194 }
3195
PP(pp_ftlink)3196 PP(pp_ftlink)
3197 {
3198 I32 result = my_lstat();
3199 dSP;
3200 if (result < 0)
3201 RETPUSHUNDEF;
3202 if (S_ISLNK(PL_statcache.st_mode))
3203 RETPUSHYES;
3204 RETPUSHNO;
3205 }
3206
PP(pp_ftsuid)3207 PP(pp_ftsuid)
3208 {
3209 dSP;
3210 #ifdef S_ISUID
3211 I32 result = my_stat();
3212 SPAGAIN;
3213 if (result < 0)
3214 RETPUSHUNDEF;
3215 if (PL_statcache.st_mode & S_ISUID)
3216 RETPUSHYES;
3217 #endif
3218 RETPUSHNO;
3219 }
3220
PP(pp_ftsgid)3221 PP(pp_ftsgid)
3222 {
3223 dSP;
3224 #ifdef S_ISGID
3225 I32 result = my_stat();
3226 SPAGAIN;
3227 if (result < 0)
3228 RETPUSHUNDEF;
3229 if (PL_statcache.st_mode & S_ISGID)
3230 RETPUSHYES;
3231 #endif
3232 RETPUSHNO;
3233 }
3234
PP(pp_ftsvtx)3235 PP(pp_ftsvtx)
3236 {
3237 dSP;
3238 #ifdef S_ISVTX
3239 I32 result = my_stat();
3240 SPAGAIN;
3241 if (result < 0)
3242 RETPUSHUNDEF;
3243 if (PL_statcache.st_mode & S_ISVTX)
3244 RETPUSHYES;
3245 #endif
3246 RETPUSHNO;
3247 }
3248
PP(pp_fttty)3249 PP(pp_fttty)
3250 {
3251 dSP;
3252 int fd;
3253 GV *gv;
3254 char *tmps = Nullch;
3255 STRLEN n_a;
3256
3257 if (PL_op->op_flags & OPf_REF)
3258 gv = cGVOP_gv;
3259 else if (isGV(TOPs))
3260 gv = (GV*)POPs;
3261 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3262 gv = (GV*)SvRV(POPs);
3263 else
3264 gv = gv_fetchpv(tmps = POPpx, FALSE, SVt_PVIO);
3265
3266 if (GvIO(gv) && IoIFP(GvIOp(gv)))
3267 fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
3268 else if (tmps && isDIGIT(*tmps))
3269 fd = atoi(tmps);
3270 else
3271 RETPUSHUNDEF;
3272 if (PerlLIO_isatty(fd))
3273 RETPUSHYES;
3274 RETPUSHNO;
3275 }
3276
3277 #if defined(atarist) /* this will work with atariST. Configure will
3278 make guesses for other systems. */
3279 # define FILE_base(f) ((f)->_base)
3280 # define FILE_ptr(f) ((f)->_ptr)
3281 # define FILE_cnt(f) ((f)->_cnt)
3282 # define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
3283 #endif
3284
PP(pp_fttext)3285 PP(pp_fttext)
3286 {
3287 dSP;
3288 I32 i;
3289 I32 len;
3290 I32 odd = 0;
3291 STDCHAR tbuf[512];
3292 register STDCHAR *s;
3293 register IO *io;
3294 register SV *sv;
3295 GV *gv;
3296 STRLEN n_a;
3297 PerlIO *fp;
3298
3299 if (PL_op->op_flags & OPf_REF)
3300 gv = cGVOP_gv;
3301 else if (isGV(TOPs))
3302 gv = (GV*)POPs;
3303 else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
3304 gv = (GV*)SvRV(POPs);
3305 else
3306 gv = Nullgv;
3307
3308 if (gv) {
3309 EXTEND(SP, 1);
3310 if (gv == PL_defgv) {
3311 if (PL_statgv)
3312 io = GvIO(PL_statgv);
3313 else {
3314 sv = PL_statname;
3315 goto really_filename;
3316 }
3317 }
3318 else {
3319 PL_statgv = gv;
3320 PL_laststatval = -1;
3321 sv_setpv(PL_statname, "");
3322 io = GvIO(PL_statgv);
3323 }
3324 if (io && IoIFP(io)) {
3325 if (! PerlIO_has_base(IoIFP(io)))
3326 DIE(aTHX_ "-T and -B not implemented on filehandles");
3327 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
3328 if (PL_laststatval < 0)
3329 RETPUSHUNDEF;
3330 if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
3331 if (PL_op->op_type == OP_FTTEXT)
3332 RETPUSHNO;
3333 else
3334 RETPUSHYES;
3335 }
3336 if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
3337 i = PerlIO_getc(IoIFP(io));
3338 if (i != EOF)
3339 (void)PerlIO_ungetc(IoIFP(io),i);
3340 }
3341 if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
3342 RETPUSHYES;
3343 len = PerlIO_get_bufsiz(IoIFP(io));
3344 s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
3345 /* sfio can have large buffers - limit to 512 */
3346 if (len > 512)
3347 len = 512;
3348 }
3349 else {
3350 if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
3351 gv = cGVOP_gv;
3352 report_evil_fh(gv, GvIO(gv), PL_op->op_type);
3353 }
3354 SETERRNO(EBADF,RMS_IFI);
3355 RETPUSHUNDEF;
3356 }
3357 }
3358 else {
3359 sv = POPs;
3360 really_filename:
3361 PL_statgv = Nullgv;
3362 PL_laststatval = -1;
3363 PL_laststype = OP_STAT;
3364 sv_setpv(PL_statname, SvPV(sv, n_a));
3365 if (!(fp = PerlIO_open(SvPVX(PL_statname), "r"))) {
3366 if (ckWARN(WARN_NEWLINE) && strchr(SvPV(PL_statname, n_a), '\n'))
3367 Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
3368 RETPUSHUNDEF;
3369 }
3370 PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
3371 if (PL_laststatval < 0) {
3372 (void)PerlIO_close(fp);
3373 RETPUSHUNDEF;
3374 }
3375 PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
3376 len = PerlIO_read(fp, tbuf, sizeof(tbuf));
3377 (void)PerlIO_close(fp);
3378 if (len <= 0) {
3379 if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
3380 RETPUSHNO; /* special case NFS directories */
3381 RETPUSHYES; /* null file is anything */
3382 }
3383 s = tbuf;
3384 }
3385
3386 /* now scan s to look for textiness */
3387 /* XXX ASCII dependent code */
3388
3389 #if defined(DOSISH) || defined(USEMYBINMODE)
3390 /* ignore trailing ^Z on short files */
3391 if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
3392 --len;
3393 #endif
3394
3395 for (i = 0; i < len; i++, s++) {
3396 if (!*s) { /* null never allowed in text */
3397 odd += len;
3398 break;
3399 }
3400 #ifdef EBCDIC
3401 else if (!(isPRINT(*s) || isSPACE(*s)))
3402 odd++;
3403 #else
3404 else if (*s & 128) {
3405 #ifdef USE_LOCALE
3406 if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
3407 continue;
3408 #endif
3409 /* utf8 characters don't count as odd */
3410 if (UTF8_IS_START(*s)) {
3411 int ulen = UTF8SKIP(s);
3412 if (ulen < len - i) {
3413 int j;
3414 for (j = 1; j < ulen; j++) {
3415 if (!UTF8_IS_CONTINUATION(s[j]))
3416 goto not_utf8;
3417 }
3418 --ulen; /* loop does extra increment */
3419 s += ulen;
3420 i += ulen;
3421 continue;
3422 }
3423 }
3424 not_utf8:
3425 odd++;
3426 }
3427 else if (*s < 32 &&
3428 *s != '\n' && *s != '\r' && *s != '\b' &&
3429 *s != '\t' && *s != '\f' && *s != 27)
3430 odd++;
3431 #endif
3432 }
3433
3434 if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
3435 RETPUSHNO;
3436 else
3437 RETPUSHYES;
3438 }
3439
PP(pp_ftbinary)3440 PP(pp_ftbinary)
3441 {
3442 return pp_fttext();
3443 }
3444
3445 /* File calls. */
3446
PP(pp_chdir)3447 PP(pp_chdir)
3448 {
3449 dSP; dTARGET;
3450 char *tmps;
3451 SV **svp;
3452 STRLEN n_a;
3453
3454 if( MAXARG == 1 )
3455 tmps = POPpx;
3456 else
3457 tmps = 0;
3458
3459 if( !tmps || !*tmps ) {
3460 if ( (svp = hv_fetch(GvHVn(PL_envgv), "HOME", 4, FALSE))
3461 || (svp = hv_fetch(GvHVn(PL_envgv), "LOGDIR", 6, FALSE))
3462 #ifdef VMS
3463 || (svp = hv_fetch(GvHVn(PL_envgv), "SYS$LOGIN", 9, FALSE))
3464 #endif
3465 )
3466 {
3467 if( MAXARG == 1 )
3468 deprecate("chdir('') or chdir(undef) as chdir()");
3469 tmps = SvPV(*svp, n_a);
3470 }
3471 else {
3472 PUSHi(0);
3473 TAINT_PROPER("chdir");
3474 RETURN;
3475 }
3476 }
3477
3478 TAINT_PROPER("chdir");
3479 PUSHi( PerlDir_chdir(tmps) >= 0 );
3480 #ifdef VMS
3481 /* Clear the DEFAULT element of ENV so we'll get the new value
3482 * in the future. */
3483 hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
3484 #endif
3485 RETURN;
3486 }
3487
PP(pp_chown)3488 PP(pp_chown)
3489 {
3490 #ifdef HAS_CHOWN
3491 dSP; dMARK; dTARGET;
3492 I32 value = (I32)apply(PL_op->op_type, MARK, SP);
3493
3494 SP = MARK;
3495 PUSHi(value);
3496 RETURN;
3497 #else
3498 DIE(aTHX_ PL_no_func, "chown");
3499 #endif
3500 }
3501
PP(pp_chroot)3502 PP(pp_chroot)
3503 {
3504 #ifdef HAS_CHROOT
3505 dSP; dTARGET;
3506 STRLEN n_a;
3507 char *tmps = POPpx;
3508 TAINT_PROPER("chroot");
3509 PUSHi( chroot(tmps) >= 0 );
3510 RETURN;
3511 #else
3512 DIE(aTHX_ PL_no_func, "chroot");
3513 #endif
3514 }
3515
PP(pp_unlink)3516 PP(pp_unlink)
3517 {
3518 dSP; dMARK; dTARGET;
3519 I32 value;
3520 value = (I32)apply(PL_op->op_type, MARK, SP);
3521 SP = MARK;
3522 PUSHi(value);
3523 RETURN;
3524 }
3525
PP(pp_chmod)3526 PP(pp_chmod)
3527 {
3528 dSP; dMARK; dTARGET;
3529 I32 value;
3530 value = (I32)apply(PL_op->op_type, MARK, SP);
3531 SP = MARK;
3532 PUSHi(value);
3533 RETURN;
3534 }
3535
PP(pp_utime)3536 PP(pp_utime)
3537 {
3538 dSP; dMARK; dTARGET;
3539 I32 value;
3540 value = (I32)apply(PL_op->op_type, MARK, SP);
3541 SP = MARK;
3542 PUSHi(value);
3543 RETURN;
3544 }
3545
PP(pp_rename)3546 PP(pp_rename)
3547 {
3548 dSP; dTARGET;
3549 int anum;
3550 STRLEN n_a;
3551
3552 char *tmps2 = POPpx;
3553 char *tmps = SvPV(TOPs, n_a);
3554 TAINT_PROPER("rename");
3555 #ifdef HAS_RENAME
3556 anum = PerlLIO_rename(tmps, tmps2);
3557 #else
3558 if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
3559 if (same_dirent(tmps2, tmps)) /* can always rename to same name */
3560 anum = 1;
3561 else {
3562 if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
3563 (void)UNLINK(tmps2);
3564 if (!(anum = link(tmps, tmps2)))
3565 anum = UNLINK(tmps);
3566 }
3567 }
3568 #endif
3569 SETi( anum >= 0 );
3570 RETURN;
3571 }
3572
PP(pp_link)3573 PP(pp_link)
3574 {
3575 #ifdef HAS_LINK
3576 dSP; dTARGET;
3577 STRLEN n_a;
3578 char *tmps2 = POPpx;
3579 char *tmps = SvPV(TOPs, n_a);
3580 TAINT_PROPER("link");
3581 SETi( PerlLIO_link(tmps, tmps2) >= 0 );
3582 RETURN;
3583 #else
3584 DIE(aTHX_ PL_no_func, "link");
3585 #endif
3586 }
3587
PP(pp_symlink)3588 PP(pp_symlink)
3589 {
3590 #ifdef HAS_SYMLINK
3591 dSP; dTARGET;
3592 STRLEN n_a;
3593 char *tmps2 = POPpx;
3594 char *tmps = SvPV(TOPs, n_a);
3595 TAINT_PROPER("symlink");
3596 SETi( symlink(tmps, tmps2) >= 0 );
3597 RETURN;
3598 #else
3599 DIE(aTHX_ PL_no_func, "symlink");
3600 #endif
3601 }
3602
PP(pp_readlink)3603 PP(pp_readlink)
3604 {
3605 dSP;
3606 #ifdef HAS_SYMLINK
3607 dTARGET;
3608 char *tmps;
3609 char buf[MAXPATHLEN];
3610 int len;
3611 STRLEN n_a;
3612
3613 #ifndef INCOMPLETE_TAINTS
3614 TAINT;
3615 #endif
3616 tmps = POPpx;
3617 len = readlink(tmps, buf, sizeof(buf) - 1);
3618 EXTEND(SP, 1);
3619 if (len < 0)
3620 RETPUSHUNDEF;
3621 PUSHp(buf, len);
3622 RETURN;
3623 #else
3624 EXTEND(SP, 1);
3625 RETSETUNDEF; /* just pretend it's a normal file */
3626 #endif
3627 }
3628
3629 #if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
3630 STATIC int
S_dooneliner(pTHX_ char * cmd,char * filename)3631 S_dooneliner(pTHX_ char *cmd, char *filename)
3632 {
3633 char *save_filename = filename;
3634 char *cmdline;
3635 char *s;
3636 PerlIO *myfp;
3637 int anum = 1;
3638
3639 New(666, cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
3640 strcpy(cmdline, cmd);
3641 strcat(cmdline, " ");
3642 for (s = cmdline + strlen(cmdline); *filename; ) {
3643 *s++ = '\\';
3644 *s++ = *filename++;
3645 }
3646 strcpy(s, " 2>&1");
3647 myfp = PerlProc_popen(cmdline, "r");
3648 Safefree(cmdline);
3649
3650 if (myfp) {
3651 SV *tmpsv = sv_newmortal();
3652 /* Need to save/restore 'PL_rs' ?? */
3653 s = sv_gets(tmpsv, myfp, 0);
3654 (void)PerlProc_pclose(myfp);
3655 if (s != Nullch) {
3656 int e;
3657 for (e = 1;
3658 #ifdef HAS_SYS_ERRLIST
3659 e <= sys_nerr
3660 #endif
3661 ; e++)
3662 {
3663 /* you don't see this */
3664 char *errmsg =
3665 #ifdef HAS_SYS_ERRLIST
3666 sys_errlist[e]
3667 #else
3668 strerror(e)
3669 #endif
3670 ;
3671 if (!errmsg)
3672 break;
3673 if (instr(s, errmsg)) {
3674 SETERRNO(e,0);
3675 return 0;
3676 }
3677 }
3678 SETERRNO(0,0);
3679 #ifndef EACCES
3680 #define EACCES EPERM
3681 #endif
3682 if (instr(s, "cannot make"))
3683 SETERRNO(EEXIST,RMS_FEX);
3684 else if (instr(s, "existing file"))
3685 SETERRNO(EEXIST,RMS_FEX);
3686 else if (instr(s, "ile exists"))
3687 SETERRNO(EEXIST,RMS_FEX);
3688 else if (instr(s, "non-exist"))
3689 SETERRNO(ENOENT,RMS_FNF);
3690 else if (instr(s, "does not exist"))
3691 SETERRNO(ENOENT,RMS_FNF);
3692 else if (instr(s, "not empty"))
3693 SETERRNO(EBUSY,SS_DEVOFFLINE);
3694 else if (instr(s, "cannot access"))
3695 SETERRNO(EACCES,RMS_PRV);
3696 else
3697 SETERRNO(EPERM,RMS_PRV);
3698 return 0;
3699 }
3700 else { /* some mkdirs return no failure indication */
3701 anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
3702 if (PL_op->op_type == OP_RMDIR)
3703 anum = !anum;
3704 if (anum)
3705 SETERRNO(0,0);
3706 else
3707 SETERRNO(EACCES,RMS_PRV); /* a guess */
3708 }
3709 return anum;
3710 }
3711 else
3712 return 0;
3713 }
3714 #endif
3715
3716 /* This macro removes trailing slashes from a directory name.
3717 * Different operating and file systems take differently to
3718 * trailing slashes. According to POSIX 1003.1 1996 Edition
3719 * any number of trailing slashes should be allowed.
3720 * Thusly we snip them away so that even non-conforming
3721 * systems are happy.
3722 * We should probably do this "filtering" for all
3723 * the functions that expect (potentially) directory names:
3724 * -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
3725 * (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
3726
3727 #define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV(TOPs, (len)); \
3728 if ((len) > 1 && (tmps)[(len)-1] == '/') { \
3729 do { \
3730 (len)--; \
3731 } while ((len) > 1 && (tmps)[(len)-1] == '/'); \
3732 (tmps) = savepvn((tmps), (len)); \
3733 (copy) = TRUE; \
3734 }
3735
PP(pp_mkdir)3736 PP(pp_mkdir)
3737 {
3738 dSP; dTARGET;
3739 int mode;
3740 #ifndef HAS_MKDIR
3741 int oldumask;
3742 #endif
3743 STRLEN len;
3744 char *tmps;
3745 bool copy = FALSE;
3746
3747 if (MAXARG > 1)
3748 mode = POPi;
3749 else
3750 mode = 0777;
3751
3752 TRIMSLASHES(tmps,len,copy);
3753
3754 TAINT_PROPER("mkdir");
3755 #ifdef HAS_MKDIR
3756 SETi( PerlDir_mkdir(tmps, mode) >= 0 );
3757 #else
3758 SETi( dooneliner("mkdir", tmps) );
3759 oldumask = PerlLIO_umask(0);
3760 PerlLIO_umask(oldumask);
3761 PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
3762 #endif
3763 if (copy)
3764 Safefree(tmps);
3765 RETURN;
3766 }
3767
PP(pp_rmdir)3768 PP(pp_rmdir)
3769 {
3770 dSP; dTARGET;
3771 STRLEN len;
3772 char *tmps;
3773 bool copy = FALSE;
3774
3775 TRIMSLASHES(tmps,len,copy);
3776 TAINT_PROPER("rmdir");
3777 #ifdef HAS_RMDIR
3778 SETi( PerlDir_rmdir(tmps) >= 0 );
3779 #else
3780 SETi( dooneliner("rmdir", tmps) );
3781 #endif
3782 if (copy)
3783 Safefree(tmps);
3784 RETURN;
3785 }
3786
3787 /* Directory calls. */
3788
PP(pp_open_dir)3789 PP(pp_open_dir)
3790 {
3791 #if defined(Direntry_t) && defined(HAS_READDIR)
3792 dSP;
3793 STRLEN n_a;
3794 char *dirname = POPpx;
3795 GV *gv = (GV*)POPs;
3796 register IO *io = GvIOn(gv);
3797
3798 if (!io)
3799 goto nope;
3800
3801 if (IoDIRP(io))
3802 PerlDir_close(IoDIRP(io));
3803 if (!(IoDIRP(io) = PerlDir_open(dirname)))
3804 goto nope;
3805
3806 RETPUSHYES;
3807 nope:
3808 if (!errno)
3809 SETERRNO(EBADF,RMS_DIR);
3810 RETPUSHUNDEF;
3811 #else
3812 DIE(aTHX_ PL_no_dir_func, "opendir");
3813 #endif
3814 }
3815
PP(pp_readdir)3816 PP(pp_readdir)
3817 {
3818 #if !defined(Direntry_t) || !defined(HAS_READDIR)
3819 DIE(aTHX_ PL_no_dir_func, "readdir");
3820 #else
3821 #if !defined(I_DIRENT) && !defined(VMS)
3822 Direntry_t *readdir (DIR *);
3823 #endif
3824 dSP;
3825
3826 SV *sv;
3827 I32 gimme = GIMME;
3828 GV *gv = (GV *)POPs;
3829 register Direntry_t *dp;
3830 register IO *io = GvIOn(gv);
3831
3832 if (!io || !IoDIRP(io))
3833 goto nope;
3834
3835 do {
3836 dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
3837 if (!dp)
3838 break;
3839 #ifdef DIRNAMLEN
3840 sv = newSVpvn(dp->d_name, dp->d_namlen);
3841 #else
3842 sv = newSVpv(dp->d_name, 0);
3843 #endif
3844 #ifndef INCOMPLETE_TAINTS
3845 if (!(IoFLAGS(io) & IOf_UNTAINT))
3846 SvTAINTED_on(sv);
3847 #endif
3848 XPUSHs(sv_2mortal(sv));
3849 }
3850 while (gimme == G_ARRAY);
3851
3852 if (!dp && gimme != G_ARRAY)
3853 goto nope;
3854
3855 RETURN;
3856
3857 nope:
3858 if (!errno)
3859 SETERRNO(EBADF,RMS_ISI);
3860 if (GIMME == G_ARRAY)
3861 RETURN;
3862 else
3863 RETPUSHUNDEF;
3864 #endif
3865 }
3866
PP(pp_telldir)3867 PP(pp_telldir)
3868 {
3869 #if defined(HAS_TELLDIR) || defined(telldir)
3870 dSP; dTARGET;
3871 /* XXX does _anyone_ need this? --AD 2/20/1998 */
3872 /* XXX netbsd still seemed to.
3873 XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
3874 --JHI 1999-Feb-02 */
3875 # if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
3876 long telldir (DIR *);
3877 # endif
3878 GV *gv = (GV*)POPs;
3879 register IO *io = GvIOn(gv);
3880
3881 if (!io || !IoDIRP(io))
3882 goto nope;
3883
3884 PUSHi( PerlDir_tell(IoDIRP(io)) );
3885 RETURN;
3886 nope:
3887 if (!errno)
3888 SETERRNO(EBADF,RMS_ISI);
3889 RETPUSHUNDEF;
3890 #else
3891 DIE(aTHX_ PL_no_dir_func, "telldir");
3892 #endif
3893 }
3894
PP(pp_seekdir)3895 PP(pp_seekdir)
3896 {
3897 #if defined(HAS_SEEKDIR) || defined(seekdir)
3898 dSP;
3899 long along = POPl;
3900 GV *gv = (GV*)POPs;
3901 register IO *io = GvIOn(gv);
3902
3903 if (!io || !IoDIRP(io))
3904 goto nope;
3905
3906 (void)PerlDir_seek(IoDIRP(io), along);
3907
3908 RETPUSHYES;
3909 nope:
3910 if (!errno)
3911 SETERRNO(EBADF,RMS_ISI);
3912 RETPUSHUNDEF;
3913 #else
3914 DIE(aTHX_ PL_no_dir_func, "seekdir");
3915 #endif
3916 }
3917
PP(pp_rewinddir)3918 PP(pp_rewinddir)
3919 {
3920 #if defined(HAS_REWINDDIR) || defined(rewinddir)
3921 dSP;
3922 GV *gv = (GV*)POPs;
3923 register IO *io = GvIOn(gv);
3924
3925 if (!io || !IoDIRP(io))
3926 goto nope;
3927
3928 (void)PerlDir_rewind(IoDIRP(io));
3929 RETPUSHYES;
3930 nope:
3931 if (!errno)
3932 SETERRNO(EBADF,RMS_ISI);
3933 RETPUSHUNDEF;
3934 #else
3935 DIE(aTHX_ PL_no_dir_func, "rewinddir");
3936 #endif
3937 }
3938
PP(pp_closedir)3939 PP(pp_closedir)
3940 {
3941 #if defined(Direntry_t) && defined(HAS_READDIR)
3942 dSP;
3943 GV *gv = (GV*)POPs;
3944 register IO *io = GvIOn(gv);
3945
3946 if (!io || !IoDIRP(io))
3947 goto nope;
3948
3949 #ifdef VOID_CLOSEDIR
3950 PerlDir_close(IoDIRP(io));
3951 #else
3952 if (PerlDir_close(IoDIRP(io)) < 0) {
3953 IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
3954 goto nope;
3955 }
3956 #endif
3957 IoDIRP(io) = 0;
3958
3959 RETPUSHYES;
3960 nope:
3961 if (!errno)
3962 SETERRNO(EBADF,RMS_IFI);
3963 RETPUSHUNDEF;
3964 #else
3965 DIE(aTHX_ PL_no_dir_func, "closedir");
3966 #endif
3967 }
3968
3969 /* Process control. */
3970
PP(pp_fork)3971 PP(pp_fork)
3972 {
3973 #ifdef HAS_FORK
3974 dSP; dTARGET;
3975 Pid_t childpid;
3976 GV *tmpgv;
3977
3978 EXTEND(SP, 1);
3979 PERL_FLUSHALL_FOR_CHILD;
3980 childpid = PerlProc_fork();
3981 if (childpid < 0)
3982 RETSETUNDEF;
3983 if (!childpid) {
3984 /*SUPPRESS 560*/
3985 if ((tmpgv = gv_fetchpv("$", TRUE, SVt_PV))) {
3986 SvREADONLY_off(GvSV(tmpgv));
3987 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3988 SvREADONLY_on(GvSV(tmpgv));
3989 }
3990 #ifdef THREADS_HAVE_PIDS
3991 PL_ppid = (IV)getppid();
3992 #endif
3993 hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
3994 }
3995 PUSHi(childpid);
3996 RETURN;
3997 #else
3998 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
3999 dSP; dTARGET;
4000 Pid_t childpid;
4001
4002 EXTEND(SP, 1);
4003 PERL_FLUSHALL_FOR_CHILD;
4004 childpid = PerlProc_fork();
4005 if (childpid == -1)
4006 RETSETUNDEF;
4007 PUSHi(childpid);
4008 RETURN;
4009 # else
4010 DIE(aTHX_ PL_no_func, "fork");
4011 # endif
4012 #endif
4013 }
4014
PP(pp_wait)4015 PP(pp_wait)
4016 {
4017 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
4018 dSP; dTARGET;
4019 Pid_t childpid;
4020 int argflags;
4021
4022 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4023 childpid = wait4pid(-1, &argflags, 0);
4024 else {
4025 while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
4026 errno == EINTR) {
4027 PERL_ASYNC_CHECK();
4028 }
4029 }
4030 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4031 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4032 STATUS_NATIVE_SET((childpid && childpid != -1) ? argflags : -1);
4033 # else
4034 STATUS_NATIVE_SET((childpid > 0) ? argflags : -1);
4035 # endif
4036 XPUSHi(childpid);
4037 RETURN;
4038 #else
4039 DIE(aTHX_ PL_no_func, "wait");
4040 #endif
4041 }
4042
PP(pp_waitpid)4043 PP(pp_waitpid)
4044 {
4045 #if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
4046 dSP; dTARGET;
4047 Pid_t pid;
4048 Pid_t result;
4049 int optype;
4050 int argflags;
4051
4052 optype = POPi;
4053 pid = TOPi;
4054 if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
4055 result = wait4pid(pid, &argflags, optype);
4056 else {
4057 while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
4058 errno == EINTR) {
4059 PERL_ASYNC_CHECK();
4060 }
4061 }
4062 # if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
4063 /* 0 and -1 are both error returns (the former applies to WNOHANG case) */
4064 STATUS_NATIVE_SET((result && result != -1) ? argflags : -1);
4065 # else
4066 STATUS_NATIVE_SET((result > 0) ? argflags : -1);
4067 # endif
4068 SETi(result);
4069 RETURN;
4070 #else
4071 DIE(aTHX_ PL_no_func, "waitpid");
4072 #endif
4073 }
4074
PP(pp_system)4075 PP(pp_system)
4076 {
4077 dSP; dMARK; dORIGMARK; dTARGET;
4078 I32 value;
4079 STRLEN n_a;
4080 int result;
4081 I32 did_pipes = 0;
4082
4083 if (PL_tainting) {
4084 TAINT_ENV();
4085 while (++MARK <= SP) {
4086 (void)SvPV_nolen(*MARK); /* stringify for taint check */
4087 if (PL_tainted)
4088 break;
4089 }
4090 MARK = ORIGMARK;
4091 TAINT_PROPER("system");
4092 }
4093 PERL_FLUSHALL_FOR_CHILD;
4094 #if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
4095 {
4096 Pid_t childpid;
4097 int pp[2];
4098
4099 if (PerlProc_pipe(pp) >= 0)
4100 did_pipes = 1;
4101 while ((childpid = PerlProc_fork()) == -1) {
4102 if (errno != EAGAIN) {
4103 value = -1;
4104 SP = ORIGMARK;
4105 PUSHi(value);
4106 if (did_pipes) {
4107 PerlLIO_close(pp[0]);
4108 PerlLIO_close(pp[1]);
4109 }
4110 RETURN;
4111 }
4112 sleep(5);
4113 }
4114 if (childpid > 0) {
4115 Sigsave_t ihand,qhand; /* place to save signals during system() */
4116 int status;
4117
4118 if (did_pipes)
4119 PerlLIO_close(pp[1]);
4120 #ifndef PERL_MICRO
4121 rsignal_save(SIGINT, SIG_IGN, &ihand);
4122 rsignal_save(SIGQUIT, SIG_IGN, &qhand);
4123 #endif
4124 do {
4125 result = wait4pid(childpid, &status, 0);
4126 } while (result == -1 && errno == EINTR);
4127 #ifndef PERL_MICRO
4128 (void)rsignal_restore(SIGINT, &ihand);
4129 (void)rsignal_restore(SIGQUIT, &qhand);
4130 #endif
4131 STATUS_NATIVE_SET(result == -1 ? -1 : status);
4132 do_execfree(); /* free any memory child malloced on fork */
4133 SP = ORIGMARK;
4134 if (did_pipes) {
4135 int errkid;
4136 int n = 0, n1;
4137
4138 while (n < sizeof(int)) {
4139 n1 = PerlLIO_read(pp[0],
4140 (void*)(((char*)&errkid)+n),
4141 (sizeof(int)) - n);
4142 if (n1 <= 0)
4143 break;
4144 n += n1;
4145 }
4146 PerlLIO_close(pp[0]);
4147 if (n) { /* Error */
4148 if (n != sizeof(int))
4149 DIE(aTHX_ "panic: kid popen errno read");
4150 errno = errkid; /* Propagate errno from kid */
4151 STATUS_CURRENT = -1;
4152 }
4153 }
4154 PUSHi(STATUS_CURRENT);
4155 RETURN;
4156 }
4157 if (did_pipes) {
4158 PerlLIO_close(pp[0]);
4159 #if defined(HAS_FCNTL) && defined(F_SETFD)
4160 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
4161 #endif
4162 }
4163 if (PL_op->op_flags & OPf_STACKED) {
4164 SV *really = *++MARK;
4165 value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
4166 }
4167 else if (SP - MARK != 1)
4168 value = (I32)do_aexec5(Nullsv, MARK, SP, pp[1], did_pipes);
4169 else {
4170 value = (I32)do_exec3(SvPVx(sv_mortalcopy(*SP), n_a), pp[1], did_pipes);
4171 }
4172 PerlProc__exit(-1);
4173 }
4174 #else /* ! FORK or VMS or OS/2 */
4175 PL_statusvalue = 0;
4176 result = 0;
4177 if (PL_op->op_flags & OPf_STACKED) {
4178 SV *really = *++MARK;
4179 # if defined(WIN32) || defined(OS2)
4180 value = (I32)do_aspawn(really, MARK, SP);
4181 # else
4182 value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
4183 # endif
4184 }
4185 else if (SP - MARK != 1) {
4186 # if defined(WIN32) || defined(OS2)
4187 value = (I32)do_aspawn(Nullsv, MARK, SP);
4188 # else
4189 value = (I32)do_aspawn(Nullsv, (void **)MARK, (void **)SP);
4190 # endif
4191 }
4192 else {
4193 value = (I32)do_spawn(SvPVx(sv_mortalcopy(*SP), n_a));
4194 }
4195 if (PL_statusvalue == -1) /* hint that value must be returned as is */
4196 result = 1;
4197 STATUS_NATIVE_SET(value);
4198 do_execfree();
4199 SP = ORIGMARK;
4200 PUSHi(result ? value : STATUS_CURRENT);
4201 #endif /* !FORK or VMS */
4202 RETURN;
4203 }
4204
PP(pp_exec)4205 PP(pp_exec)
4206 {
4207 dSP; dMARK; dORIGMARK; dTARGET;
4208 I32 value;
4209 STRLEN n_a;
4210
4211 if (PL_tainting) {
4212 TAINT_ENV();
4213 while (++MARK <= SP) {
4214 (void)SvPV_nolen(*MARK); /* stringify for taint check */
4215 if (PL_tainted)
4216 break;
4217 }
4218 MARK = ORIGMARK;
4219 TAINT_PROPER("exec");
4220 }
4221 PERL_FLUSHALL_FOR_CHILD;
4222 if (PL_op->op_flags & OPf_STACKED) {
4223 SV *really = *++MARK;
4224 value = (I32)do_aexec(really, MARK, SP);
4225 }
4226 else if (SP - MARK != 1)
4227 #ifdef VMS
4228 value = (I32)vms_do_aexec(Nullsv, MARK, SP);
4229 #else
4230 # ifdef __OPEN_VM
4231 {
4232 (void ) do_aspawn(Nullsv, MARK, SP);
4233 value = 0;
4234 }
4235 # else
4236 value = (I32)do_aexec(Nullsv, MARK, SP);
4237 # endif
4238 #endif
4239 else {
4240 #ifdef VMS
4241 value = (I32)vms_do_exec(SvPVx(sv_mortalcopy(*SP), n_a));
4242 #else
4243 # ifdef __OPEN_VM
4244 (void) do_spawn(SvPVx(sv_mortalcopy(*SP), n_a));
4245 value = 0;
4246 # else
4247 value = (I32)do_exec(SvPVx(sv_mortalcopy(*SP), n_a));
4248 # endif
4249 #endif
4250 }
4251
4252 SP = ORIGMARK;
4253 PUSHi(value);
4254 RETURN;
4255 }
4256
PP(pp_kill)4257 PP(pp_kill)
4258 {
4259 #ifdef HAS_KILL
4260 dSP; dMARK; dTARGET;
4261 I32 value;
4262 value = (I32)apply(PL_op->op_type, MARK, SP);
4263 SP = MARK;
4264 PUSHi(value);
4265 RETURN;
4266 #else
4267 DIE(aTHX_ PL_no_func, "kill");
4268 #endif
4269 }
4270
PP(pp_getppid)4271 PP(pp_getppid)
4272 {
4273 #ifdef HAS_GETPPID
4274 dSP; dTARGET;
4275 # ifdef THREADS_HAVE_PIDS
4276 XPUSHi( PL_ppid );
4277 # else
4278 XPUSHi( getppid() );
4279 # endif
4280 RETURN;
4281 #else
4282 DIE(aTHX_ PL_no_func, "getppid");
4283 #endif
4284 }
4285
PP(pp_getpgrp)4286 PP(pp_getpgrp)
4287 {
4288 #ifdef HAS_GETPGRP
4289 dSP; dTARGET;
4290 Pid_t pid;
4291 Pid_t pgrp;
4292
4293 if (MAXARG < 1)
4294 pid = 0;
4295 else
4296 pid = SvIVx(POPs);
4297 #ifdef BSD_GETPGRP
4298 pgrp = (I32)BSD_GETPGRP(pid);
4299 #else
4300 if (pid != 0 && pid != PerlProc_getpid())
4301 DIE(aTHX_ "POSIX getpgrp can't take an argument");
4302 pgrp = getpgrp();
4303 #endif
4304 XPUSHi(pgrp);
4305 RETURN;
4306 #else
4307 DIE(aTHX_ PL_no_func, "getpgrp()");
4308 #endif
4309 }
4310
PP(pp_setpgrp)4311 PP(pp_setpgrp)
4312 {
4313 #ifdef HAS_SETPGRP
4314 dSP; dTARGET;
4315 Pid_t pgrp;
4316 Pid_t pid;
4317 if (MAXARG < 2) {
4318 pgrp = 0;
4319 pid = 0;
4320 }
4321 else {
4322 pgrp = POPi;
4323 pid = TOPi;
4324 }
4325
4326 TAINT_PROPER("setpgrp");
4327 #ifdef BSD_SETPGRP
4328 SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
4329 #else
4330 if ((pgrp != 0 && pgrp != PerlProc_getpid())
4331 || (pid != 0 && pid != PerlProc_getpid()))
4332 {
4333 DIE(aTHX_ "setpgrp can't take arguments");
4334 }
4335 SETi( setpgrp() >= 0 );
4336 #endif /* USE_BSDPGRP */
4337 RETURN;
4338 #else
4339 DIE(aTHX_ PL_no_func, "setpgrp()");
4340 #endif
4341 }
4342
PP(pp_getpriority)4343 PP(pp_getpriority)
4344 {
4345 #ifdef HAS_GETPRIORITY
4346 dSP; dTARGET;
4347 int who = POPi;
4348 int which = TOPi;
4349 SETi( getpriority(which, who) );
4350 RETURN;
4351 #else
4352 DIE(aTHX_ PL_no_func, "getpriority()");
4353 #endif
4354 }
4355
PP(pp_setpriority)4356 PP(pp_setpriority)
4357 {
4358 #ifdef HAS_SETPRIORITY
4359 dSP; dTARGET;
4360 int niceval = POPi;
4361 int who = POPi;
4362 int which = TOPi;
4363 TAINT_PROPER("setpriority");
4364 SETi( setpriority(which, who, niceval) >= 0 );
4365 RETURN;
4366 #else
4367 DIE(aTHX_ PL_no_func, "setpriority()");
4368 #endif
4369 }
4370
4371 /* Time calls. */
4372
PP(pp_time)4373 PP(pp_time)
4374 {
4375 dSP; dTARGET;
4376 #ifdef BIG_TIME
4377 XPUSHn( time(Null(Time_t*)) );
4378 #else
4379 XPUSHi( time(Null(Time_t*)) );
4380 #endif
4381 RETURN;
4382 }
4383
PP(pp_tms)4384 PP(pp_tms)
4385 {
4386 #ifdef HAS_TIMES
4387 dSP;
4388 EXTEND(SP, 4);
4389 #ifndef VMS
4390 (void)PerlProc_times(&PL_timesbuf);
4391 #else
4392 (void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
4393 /* struct tms, though same data */
4394 /* is returned. */
4395 #endif
4396
4397 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
4398 if (GIMME == G_ARRAY) {
4399 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
4400 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
4401 PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
4402 }
4403 RETURN;
4404 #else
4405 # ifdef PERL_MICRO
4406 dSP;
4407 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4408 EXTEND(SP, 4);
4409 if (GIMME == G_ARRAY) {
4410 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4411 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4412 PUSHs(sv_2mortal(newSVnv((NV)0.0)));
4413 }
4414 RETURN;
4415 # else
4416 DIE(aTHX_ "times not implemented");
4417 # endif
4418 #endif /* HAS_TIMES */
4419 }
4420
PP(pp_localtime)4421 PP(pp_localtime)
4422 {
4423 return pp_gmtime();
4424 }
4425
PP(pp_gmtime)4426 PP(pp_gmtime)
4427 {
4428 dSP;
4429 Time_t when;
4430 struct tm *tmbuf;
4431 static char *dayname[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
4432 static char *monname[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
4433 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
4434
4435 if (MAXARG < 1)
4436 (void)time(&when);
4437 else
4438 #ifdef BIG_TIME
4439 when = (Time_t)SvNVx(POPs);
4440 #else
4441 when = (Time_t)SvIVx(POPs);
4442 #endif
4443
4444 if (PL_op->op_type == OP_LOCALTIME)
4445 tmbuf = localtime(&when);
4446 else
4447 tmbuf = gmtime(&when);
4448
4449 if (GIMME != G_ARRAY) {
4450 SV *tsv;
4451 EXTEND(SP, 1);
4452 EXTEND_MORTAL(1);
4453 if (!tmbuf)
4454 RETPUSHUNDEF;
4455 tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
4456 dayname[tmbuf->tm_wday],
4457 monname[tmbuf->tm_mon],
4458 tmbuf->tm_mday,
4459 tmbuf->tm_hour,
4460 tmbuf->tm_min,
4461 tmbuf->tm_sec,
4462 tmbuf->tm_year + 1900);
4463 PUSHs(sv_2mortal(tsv));
4464 }
4465 else if (tmbuf) {
4466 EXTEND(SP, 9);
4467 EXTEND_MORTAL(9);
4468 PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
4469 PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
4470 PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
4471 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
4472 PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
4473 PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
4474 PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
4475 PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
4476 PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
4477 }
4478 RETURN;
4479 }
4480
PP(pp_alarm)4481 PP(pp_alarm)
4482 {
4483 #ifdef HAS_ALARM
4484 dSP; dTARGET;
4485 int anum;
4486 anum = POPi;
4487 anum = alarm((unsigned int)anum);
4488 EXTEND(SP, 1);
4489 if (anum < 0)
4490 RETPUSHUNDEF;
4491 PUSHi(anum);
4492 RETURN;
4493 #else
4494 DIE(aTHX_ PL_no_func, "alarm");
4495 #endif
4496 }
4497
PP(pp_sleep)4498 PP(pp_sleep)
4499 {
4500 dSP; dTARGET;
4501 I32 duration;
4502 Time_t lasttime;
4503 Time_t when;
4504
4505 (void)time(&lasttime);
4506 if (MAXARG < 1)
4507 PerlProc_pause();
4508 else {
4509 duration = POPi;
4510 PerlProc_sleep((unsigned int)duration);
4511 }
4512 (void)time(&when);
4513 XPUSHi(when - lasttime);
4514 RETURN;
4515 }
4516
4517 /* Shared memory. */
4518
PP(pp_shmget)4519 PP(pp_shmget)
4520 {
4521 return pp_semget();
4522 }
4523
PP(pp_shmctl)4524 PP(pp_shmctl)
4525 {
4526 return pp_semctl();
4527 }
4528
PP(pp_shmread)4529 PP(pp_shmread)
4530 {
4531 return pp_shmwrite();
4532 }
4533
PP(pp_shmwrite)4534 PP(pp_shmwrite)
4535 {
4536 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4537 dSP; dMARK; dTARGET;
4538 I32 value = (I32)(do_shmio(PL_op->op_type, MARK, SP) >= 0);
4539 SP = MARK;
4540 PUSHi(value);
4541 RETURN;
4542 #else
4543 return pp_semget();
4544 #endif
4545 }
4546
4547 /* Message passing. */
4548
PP(pp_msgget)4549 PP(pp_msgget)
4550 {
4551 return pp_semget();
4552 }
4553
PP(pp_msgctl)4554 PP(pp_msgctl)
4555 {
4556 return pp_semctl();
4557 }
4558
PP(pp_msgsnd)4559 PP(pp_msgsnd)
4560 {
4561 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4562 dSP; dMARK; dTARGET;
4563 I32 value = (I32)(do_msgsnd(MARK, SP) >= 0);
4564 SP = MARK;
4565 PUSHi(value);
4566 RETURN;
4567 #else
4568 return pp_semget();
4569 #endif
4570 }
4571
PP(pp_msgrcv)4572 PP(pp_msgrcv)
4573 {
4574 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4575 dSP; dMARK; dTARGET;
4576 I32 value = (I32)(do_msgrcv(MARK, SP) >= 0);
4577 SP = MARK;
4578 PUSHi(value);
4579 RETURN;
4580 #else
4581 return pp_semget();
4582 #endif
4583 }
4584
4585 /* Semaphores. */
4586
PP(pp_semget)4587 PP(pp_semget)
4588 {
4589 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4590 dSP; dMARK; dTARGET;
4591 int anum = do_ipcget(PL_op->op_type, MARK, SP);
4592 SP = MARK;
4593 if (anum == -1)
4594 RETPUSHUNDEF;
4595 PUSHi(anum);
4596 RETURN;
4597 #else
4598 DIE(aTHX_ "System V IPC is not implemented on this machine");
4599 #endif
4600 }
4601
PP(pp_semctl)4602 PP(pp_semctl)
4603 {
4604 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4605 dSP; dMARK; dTARGET;
4606 int anum = do_ipcctl(PL_op->op_type, MARK, SP);
4607 SP = MARK;
4608 if (anum == -1)
4609 RETSETUNDEF;
4610 if (anum != 0) {
4611 PUSHi(anum);
4612 }
4613 else {
4614 PUSHp(zero_but_true, ZBTLEN);
4615 }
4616 RETURN;
4617 #else
4618 return pp_semget();
4619 #endif
4620 }
4621
PP(pp_semop)4622 PP(pp_semop)
4623 {
4624 #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
4625 dSP; dMARK; dTARGET;
4626 I32 value = (I32)(do_semop(MARK, SP) >= 0);
4627 SP = MARK;
4628 PUSHi(value);
4629 RETURN;
4630 #else
4631 return pp_semget();
4632 #endif
4633 }
4634
4635 /* Get system info. */
4636
PP(pp_ghbyname)4637 PP(pp_ghbyname)
4638 {
4639 #ifdef HAS_GETHOSTBYNAME
4640 return pp_ghostent();
4641 #else
4642 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4643 #endif
4644 }
4645
PP(pp_ghbyaddr)4646 PP(pp_ghbyaddr)
4647 {
4648 #ifdef HAS_GETHOSTBYADDR
4649 return pp_ghostent();
4650 #else
4651 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4652 #endif
4653 }
4654
PP(pp_ghostent)4655 PP(pp_ghostent)
4656 {
4657 #if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
4658 dSP;
4659 I32 which = PL_op->op_type;
4660 register char **elem;
4661 register SV *sv;
4662 #ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
4663 struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
4664 struct hostent *gethostbyname(Netdb_name_t);
4665 struct hostent *gethostent(void);
4666 #endif
4667 struct hostent *hent;
4668 unsigned long len;
4669 STRLEN n_a;
4670
4671 EXTEND(SP, 10);
4672 if (which == OP_GHBYNAME) {
4673 #ifdef HAS_GETHOSTBYNAME
4674 char* name = POPpbytex;
4675 hent = PerlSock_gethostbyname(name);
4676 #else
4677 DIE(aTHX_ PL_no_sock_func, "gethostbyname");
4678 #endif
4679 }
4680 else if (which == OP_GHBYADDR) {
4681 #ifdef HAS_GETHOSTBYADDR
4682 int addrtype = POPi;
4683 SV *addrsv = POPs;
4684 STRLEN addrlen;
4685 Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
4686
4687 hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
4688 #else
4689 DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
4690 #endif
4691 }
4692 else
4693 #ifdef HAS_GETHOSTENT
4694 hent = PerlSock_gethostent();
4695 #else
4696 DIE(aTHX_ PL_no_sock_func, "gethostent");
4697 #endif
4698
4699 #ifdef HOST_NOT_FOUND
4700 if (!hent) {
4701 #ifdef USE_REENTRANT_API
4702 # ifdef USE_GETHOSTENT_ERRNO
4703 h_errno = PL_reentrant_buffer->_gethostent_errno;
4704 # endif
4705 #endif
4706 STATUS_NATIVE_SET(h_errno);
4707 }
4708 #endif
4709
4710 if (GIMME != G_ARRAY) {
4711 PUSHs(sv = sv_newmortal());
4712 if (hent) {
4713 if (which == OP_GHBYNAME) {
4714 if (hent->h_addr)
4715 sv_setpvn(sv, hent->h_addr, hent->h_length);
4716 }
4717 else
4718 sv_setpv(sv, (char*)hent->h_name);
4719 }
4720 RETURN;
4721 }
4722
4723 if (hent) {
4724 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4725 sv_setpv(sv, (char*)hent->h_name);
4726 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4727 for (elem = hent->h_aliases; elem && *elem; elem++) {
4728 sv_catpv(sv, *elem);
4729 if (elem[1])
4730 sv_catpvn(sv, " ", 1);
4731 }
4732 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4733 sv_setiv(sv, (IV)hent->h_addrtype);
4734 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4735 len = hent->h_length;
4736 sv_setiv(sv, (IV)len);
4737 #ifdef h_addr
4738 for (elem = hent->h_addr_list; elem && *elem; elem++) {
4739 XPUSHs(sv = sv_mortalcopy(&PL_sv_no));
4740 sv_setpvn(sv, *elem, len);
4741 }
4742 #else
4743 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4744 if (hent->h_addr)
4745 sv_setpvn(sv, hent->h_addr, len);
4746 #endif /* h_addr */
4747 }
4748 RETURN;
4749 #else
4750 DIE(aTHX_ PL_no_sock_func, "gethostent");
4751 #endif
4752 }
4753
PP(pp_gnbyname)4754 PP(pp_gnbyname)
4755 {
4756 #ifdef HAS_GETNETBYNAME
4757 return pp_gnetent();
4758 #else
4759 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4760 #endif
4761 }
4762
PP(pp_gnbyaddr)4763 PP(pp_gnbyaddr)
4764 {
4765 #ifdef HAS_GETNETBYADDR
4766 return pp_gnetent();
4767 #else
4768 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4769 #endif
4770 }
4771
PP(pp_gnetent)4772 PP(pp_gnetent)
4773 {
4774 #if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
4775 dSP;
4776 I32 which = PL_op->op_type;
4777 register char **elem;
4778 register SV *sv;
4779 #ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
4780 struct netent *getnetbyaddr(Netdb_net_t, int);
4781 struct netent *getnetbyname(Netdb_name_t);
4782 struct netent *getnetent(void);
4783 #endif
4784 struct netent *nent;
4785 STRLEN n_a;
4786
4787 if (which == OP_GNBYNAME){
4788 #ifdef HAS_GETNETBYNAME
4789 char *name = POPpbytex;
4790 nent = PerlSock_getnetbyname(name);
4791 #else
4792 DIE(aTHX_ PL_no_sock_func, "getnetbyname");
4793 #endif
4794 }
4795 else if (which == OP_GNBYADDR) {
4796 #ifdef HAS_GETNETBYADDR
4797 int addrtype = POPi;
4798 Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
4799 nent = PerlSock_getnetbyaddr(addr, addrtype);
4800 #else
4801 DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
4802 #endif
4803 }
4804 else
4805 #ifdef HAS_GETNETENT
4806 nent = PerlSock_getnetent();
4807 #else
4808 DIE(aTHX_ PL_no_sock_func, "getnetent");
4809 #endif
4810
4811 #ifdef HOST_NOT_FOUND
4812 if (!nent) {
4813 #ifdef USE_REENTRANT_API
4814 # ifdef USE_GETNETENT_ERRNO
4815 h_errno = PL_reentrant_buffer->_getnetent_errno;
4816 # endif
4817 #endif
4818 STATUS_NATIVE_SET(h_errno);
4819 }
4820 #endif
4821
4822 EXTEND(SP, 4);
4823 if (GIMME != G_ARRAY) {
4824 PUSHs(sv = sv_newmortal());
4825 if (nent) {
4826 if (which == OP_GNBYNAME)
4827 sv_setiv(sv, (IV)nent->n_net);
4828 else
4829 sv_setpv(sv, nent->n_name);
4830 }
4831 RETURN;
4832 }
4833
4834 if (nent) {
4835 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4836 sv_setpv(sv, nent->n_name);
4837 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4838 for (elem = nent->n_aliases; elem && *elem; elem++) {
4839 sv_catpv(sv, *elem);
4840 if (elem[1])
4841 sv_catpvn(sv, " ", 1);
4842 }
4843 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4844 sv_setiv(sv, (IV)nent->n_addrtype);
4845 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4846 sv_setiv(sv, (IV)nent->n_net);
4847 }
4848
4849 RETURN;
4850 #else
4851 DIE(aTHX_ PL_no_sock_func, "getnetent");
4852 #endif
4853 }
4854
PP(pp_gpbyname)4855 PP(pp_gpbyname)
4856 {
4857 #ifdef HAS_GETPROTOBYNAME
4858 return pp_gprotoent();
4859 #else
4860 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4861 #endif
4862 }
4863
PP(pp_gpbynumber)4864 PP(pp_gpbynumber)
4865 {
4866 #ifdef HAS_GETPROTOBYNUMBER
4867 return pp_gprotoent();
4868 #else
4869 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4870 #endif
4871 }
4872
PP(pp_gprotoent)4873 PP(pp_gprotoent)
4874 {
4875 #if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
4876 dSP;
4877 I32 which = PL_op->op_type;
4878 register char **elem;
4879 register SV *sv;
4880 #ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
4881 struct protoent *getprotobyname(Netdb_name_t);
4882 struct protoent *getprotobynumber(int);
4883 struct protoent *getprotoent(void);
4884 #endif
4885 struct protoent *pent;
4886 STRLEN n_a;
4887
4888 if (which == OP_GPBYNAME) {
4889 #ifdef HAS_GETPROTOBYNAME
4890 char* name = POPpbytex;
4891 pent = PerlSock_getprotobyname(name);
4892 #else
4893 DIE(aTHX_ PL_no_sock_func, "getprotobyname");
4894 #endif
4895 }
4896 else if (which == OP_GPBYNUMBER) {
4897 #ifdef HAS_GETPROTOBYNUMBER
4898 int number = POPi;
4899 pent = PerlSock_getprotobynumber(number);
4900 #else
4901 DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
4902 #endif
4903 }
4904 else
4905 #ifdef HAS_GETPROTOENT
4906 pent = PerlSock_getprotoent();
4907 #else
4908 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4909 #endif
4910
4911 EXTEND(SP, 3);
4912 if (GIMME != G_ARRAY) {
4913 PUSHs(sv = sv_newmortal());
4914 if (pent) {
4915 if (which == OP_GPBYNAME)
4916 sv_setiv(sv, (IV)pent->p_proto);
4917 else
4918 sv_setpv(sv, pent->p_name);
4919 }
4920 RETURN;
4921 }
4922
4923 if (pent) {
4924 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4925 sv_setpv(sv, pent->p_name);
4926 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4927 for (elem = pent->p_aliases; elem && *elem; elem++) {
4928 sv_catpv(sv, *elem);
4929 if (elem[1])
4930 sv_catpvn(sv, " ", 1);
4931 }
4932 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
4933 sv_setiv(sv, (IV)pent->p_proto);
4934 }
4935
4936 RETURN;
4937 #else
4938 DIE(aTHX_ PL_no_sock_func, "getprotoent");
4939 #endif
4940 }
4941
PP(pp_gsbyname)4942 PP(pp_gsbyname)
4943 {
4944 #ifdef HAS_GETSERVBYNAME
4945 return pp_gservent();
4946 #else
4947 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4948 #endif
4949 }
4950
PP(pp_gsbyport)4951 PP(pp_gsbyport)
4952 {
4953 #ifdef HAS_GETSERVBYPORT
4954 return pp_gservent();
4955 #else
4956 DIE(aTHX_ PL_no_sock_func, "getservbyport");
4957 #endif
4958 }
4959
PP(pp_gservent)4960 PP(pp_gservent)
4961 {
4962 #if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
4963 dSP;
4964 I32 which = PL_op->op_type;
4965 register char **elem;
4966 register SV *sv;
4967 #ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
4968 struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
4969 struct servent *getservbyport(int, Netdb_name_t);
4970 struct servent *getservent(void);
4971 #endif
4972 struct servent *sent;
4973 STRLEN n_a;
4974
4975 if (which == OP_GSBYNAME) {
4976 #ifdef HAS_GETSERVBYNAME
4977 char *proto = POPpbytex;
4978 char *name = POPpbytex;
4979
4980 if (proto && !*proto)
4981 proto = Nullch;
4982
4983 sent = PerlSock_getservbyname(name, proto);
4984 #else
4985 DIE(aTHX_ PL_no_sock_func, "getservbyname");
4986 #endif
4987 }
4988 else if (which == OP_GSBYPORT) {
4989 #ifdef HAS_GETSERVBYPORT
4990 char *proto = POPpbytex;
4991 unsigned short port = (unsigned short)POPu;
4992
4993 if (proto && !*proto)
4994 proto = Nullch;
4995
4996 #ifdef HAS_HTONS
4997 port = PerlSock_htons(port);
4998 #endif
4999 sent = PerlSock_getservbyport(port, proto);
5000 #else
5001 DIE(aTHX_ PL_no_sock_func, "getservbyport");
5002 #endif
5003 }
5004 else
5005 #ifdef HAS_GETSERVENT
5006 sent = PerlSock_getservent();
5007 #else
5008 DIE(aTHX_ PL_no_sock_func, "getservent");
5009 #endif
5010
5011 EXTEND(SP, 4);
5012 if (GIMME != G_ARRAY) {
5013 PUSHs(sv = sv_newmortal());
5014 if (sent) {
5015 if (which == OP_GSBYNAME) {
5016 #ifdef HAS_NTOHS
5017 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
5018 #else
5019 sv_setiv(sv, (IV)(sent->s_port));
5020 #endif
5021 }
5022 else
5023 sv_setpv(sv, sent->s_name);
5024 }
5025 RETURN;
5026 }
5027
5028 if (sent) {
5029 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5030 sv_setpv(sv, sent->s_name);
5031 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5032 for (elem = sent->s_aliases; elem && *elem; elem++) {
5033 sv_catpv(sv, *elem);
5034 if (elem[1])
5035 sv_catpvn(sv, " ", 1);
5036 }
5037 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5038 #ifdef HAS_NTOHS
5039 sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
5040 #else
5041 sv_setiv(sv, (IV)(sent->s_port));
5042 #endif
5043 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5044 sv_setpv(sv, sent->s_proto);
5045 }
5046
5047 RETURN;
5048 #else
5049 DIE(aTHX_ PL_no_sock_func, "getservent");
5050 #endif
5051 }
5052
PP(pp_shostent)5053 PP(pp_shostent)
5054 {
5055 #ifdef HAS_SETHOSTENT
5056 dSP;
5057 PerlSock_sethostent(TOPi);
5058 RETSETYES;
5059 #else
5060 DIE(aTHX_ PL_no_sock_func, "sethostent");
5061 #endif
5062 }
5063
PP(pp_snetent)5064 PP(pp_snetent)
5065 {
5066 #ifdef HAS_SETNETENT
5067 dSP;
5068 PerlSock_setnetent(TOPi);
5069 RETSETYES;
5070 #else
5071 DIE(aTHX_ PL_no_sock_func, "setnetent");
5072 #endif
5073 }
5074
PP(pp_sprotoent)5075 PP(pp_sprotoent)
5076 {
5077 #ifdef HAS_SETPROTOENT
5078 dSP;
5079 PerlSock_setprotoent(TOPi);
5080 RETSETYES;
5081 #else
5082 DIE(aTHX_ PL_no_sock_func, "setprotoent");
5083 #endif
5084 }
5085
PP(pp_sservent)5086 PP(pp_sservent)
5087 {
5088 #ifdef HAS_SETSERVENT
5089 dSP;
5090 PerlSock_setservent(TOPi);
5091 RETSETYES;
5092 #else
5093 DIE(aTHX_ PL_no_sock_func, "setservent");
5094 #endif
5095 }
5096
PP(pp_ehostent)5097 PP(pp_ehostent)
5098 {
5099 #ifdef HAS_ENDHOSTENT
5100 dSP;
5101 PerlSock_endhostent();
5102 EXTEND(SP,1);
5103 RETPUSHYES;
5104 #else
5105 DIE(aTHX_ PL_no_sock_func, "endhostent");
5106 #endif
5107 }
5108
PP(pp_enetent)5109 PP(pp_enetent)
5110 {
5111 #ifdef HAS_ENDNETENT
5112 dSP;
5113 PerlSock_endnetent();
5114 EXTEND(SP,1);
5115 RETPUSHYES;
5116 #else
5117 DIE(aTHX_ PL_no_sock_func, "endnetent");
5118 #endif
5119 }
5120
PP(pp_eprotoent)5121 PP(pp_eprotoent)
5122 {
5123 #ifdef HAS_ENDPROTOENT
5124 dSP;
5125 PerlSock_endprotoent();
5126 EXTEND(SP,1);
5127 RETPUSHYES;
5128 #else
5129 DIE(aTHX_ PL_no_sock_func, "endprotoent");
5130 #endif
5131 }
5132
PP(pp_eservent)5133 PP(pp_eservent)
5134 {
5135 #ifdef HAS_ENDSERVENT
5136 dSP;
5137 PerlSock_endservent();
5138 EXTEND(SP,1);
5139 RETPUSHYES;
5140 #else
5141 DIE(aTHX_ PL_no_sock_func, "endservent");
5142 #endif
5143 }
5144
PP(pp_gpwnam)5145 PP(pp_gpwnam)
5146 {
5147 #ifdef HAS_PASSWD
5148 return pp_gpwent();
5149 #else
5150 DIE(aTHX_ PL_no_func, "getpwnam");
5151 #endif
5152 }
5153
PP(pp_gpwuid)5154 PP(pp_gpwuid)
5155 {
5156 #ifdef HAS_PASSWD
5157 return pp_gpwent();
5158 #else
5159 DIE(aTHX_ PL_no_func, "getpwuid");
5160 #endif
5161 }
5162
PP(pp_gpwent)5163 PP(pp_gpwent)
5164 {
5165 #ifdef HAS_PASSWD
5166 dSP;
5167 I32 which = PL_op->op_type;
5168 register SV *sv;
5169 STRLEN n_a;
5170 struct passwd *pwent = NULL;
5171 /*
5172 * We currently support only the SysV getsp* shadow password interface.
5173 * The interface is declared in <shadow.h> and often one needs to link
5174 * with -lsecurity or some such.
5175 * This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
5176 * (and SCO?)
5177 *
5178 * AIX getpwnam() is clever enough to return the encrypted password
5179 * only if the caller (euid?) is root.
5180 *
5181 * There are at least three other shadow password APIs. Many platforms
5182 * seem to contain more than one interface for accessing the shadow
5183 * password databases, possibly for compatibility reasons.
5184 * The getsp*() is by far he simplest one, the other two interfaces
5185 * are much more complicated, but also very similar to each other.
5186 *
5187 * <sys/types.h>
5188 * <sys/security.h>
5189 * <prot.h>
5190 * struct pr_passwd *getprpw*();
5191 * The password is in
5192 * char getprpw*(...).ufld.fd_encrypt[]
5193 * Mention HAS_GETPRPWNAM here so that Configure probes for it.
5194 *
5195 * <sys/types.h>
5196 * <sys/security.h>
5197 * <prot.h>
5198 * struct es_passwd *getespw*();
5199 * The password is in
5200 * char *(getespw*(...).ufld.fd_encrypt)
5201 * Mention HAS_GETESPWNAM here so that Configure probes for it.
5202 *
5203 * <userpw.h> (AIX)
5204 * struct userpw *getuserpw();
5205 * The password is in
5206 * char *(getuserpw(...)).spw_upw_passwd
5207 * (but the de facto standard getpwnam() should work okay)
5208 *
5209 * Mention I_PROT here so that Configure probes for it.
5210 *
5211 * In HP-UX for getprpw*() the manual page claims that one should include
5212 * <hpsecurity.h> instead of <sys/security.h>, but that is not needed
5213 * if one includes <shadow.h> as that includes <hpsecurity.h>,
5214 * and pp_sys.c already includes <shadow.h> if there is such.
5215 *
5216 * Note that <sys/security.h> is already probed for, but currently
5217 * it is only included in special cases.
5218 *
5219 * In Digital UNIX/Tru64 if using the getespw*() (which seems to be
5220 * be preferred interface, even though also the getprpw*() interface
5221 * is available) one needs to link with -lsecurity -ldb -laud -lm.
5222 * One also needs to call set_auth_parameters() in main() before
5223 * doing anything else, whether one is using getespw*() or getprpw*().
5224 *
5225 * Note that accessing the shadow databases can be magnitudes
5226 * slower than accessing the standard databases.
5227 *
5228 * --jhi
5229 */
5230
5231 # if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
5232 /* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
5233 * the pw_comment is left uninitialized. */
5234 PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
5235 # endif
5236
5237 switch (which) {
5238 case OP_GPWNAM:
5239 {
5240 char* name = POPpbytex;
5241 pwent = getpwnam(name);
5242 }
5243 break;
5244 case OP_GPWUID:
5245 {
5246 Uid_t uid = POPi;
5247 pwent = getpwuid(uid);
5248 }
5249 break;
5250 case OP_GPWENT:
5251 # ifdef HAS_GETPWENT
5252 pwent = getpwent();
5253 #ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
5254 if (pwent) pwent = getpwnam(pwent->pw_name);
5255 #endif
5256 # else
5257 DIE(aTHX_ PL_no_func, "getpwent");
5258 # endif
5259 break;
5260 }
5261
5262 EXTEND(SP, 10);
5263 if (GIMME != G_ARRAY) {
5264 PUSHs(sv = sv_newmortal());
5265 if (pwent) {
5266 if (which == OP_GPWNAM)
5267 # if Uid_t_sign <= 0
5268 sv_setiv(sv, (IV)pwent->pw_uid);
5269 # else
5270 sv_setuv(sv, (UV)pwent->pw_uid);
5271 # endif
5272 else
5273 sv_setpv(sv, pwent->pw_name);
5274 }
5275 RETURN;
5276 }
5277
5278 if (pwent) {
5279 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5280 sv_setpv(sv, pwent->pw_name);
5281
5282 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5283 SvPOK_off(sv);
5284 /* If we have getspnam(), we try to dig up the shadow
5285 * password. If we are underprivileged, the shadow
5286 * interface will set the errno to EACCES or similar,
5287 * and return a null pointer. If this happens, we will
5288 * use the dummy password (usually "*" or "x") from the
5289 * standard password database.
5290 *
5291 * In theory we could skip the shadow call completely
5292 * if euid != 0 but in practice we cannot know which
5293 * security measures are guarding the shadow databases
5294 * on a random platform.
5295 *
5296 * Resist the urge to use additional shadow interfaces.
5297 * Divert the urge to writing an extension instead.
5298 *
5299 * --jhi */
5300 /* Some AIX setups falsely(?) detect some getspnam(), which
5301 * has a different API than the Solaris/IRIX one. */
5302 # if defined(HAS_GETSPNAM) && !defined(_AIX)
5303 {
5304 struct spwd *spwent;
5305 int saverrno; /* Save and restore errno so that
5306 * underprivileged attempts seem
5307 * to have never made the unsccessful
5308 * attempt to retrieve the shadow password. */
5309
5310 saverrno = errno;
5311 spwent = getspnam(pwent->pw_name);
5312 errno = saverrno;
5313 if (spwent && spwent->sp_pwdp)
5314 sv_setpv(sv, spwent->sp_pwdp);
5315 }
5316 # endif
5317 # ifdef PWPASSWD
5318 if (!SvPOK(sv)) /* Use the standard password, then. */
5319 sv_setpv(sv, pwent->pw_passwd);
5320 # endif
5321
5322 # ifndef INCOMPLETE_TAINTS
5323 /* passwd is tainted because user himself can diddle with it.
5324 * admittedly not much and in a very limited way, but nevertheless. */
5325 SvTAINTED_on(sv);
5326 # endif
5327
5328 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5329 # if Uid_t_sign <= 0
5330 sv_setiv(sv, (IV)pwent->pw_uid);
5331 # else
5332 sv_setuv(sv, (UV)pwent->pw_uid);
5333 # endif
5334
5335 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5336 # if Uid_t_sign <= 0
5337 sv_setiv(sv, (IV)pwent->pw_gid);
5338 # else
5339 sv_setuv(sv, (UV)pwent->pw_gid);
5340 # endif
5341 /* pw_change, pw_quota, and pw_age are mutually exclusive--
5342 * because of the poor interface of the Perl getpw*(),
5343 * not because there's some standard/convention saying so.
5344 * A better interface would have been to return a hash,
5345 * but we are accursed by our history, alas. --jhi. */
5346 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5347 # ifdef PWCHANGE
5348 sv_setiv(sv, (IV)pwent->pw_change);
5349 # else
5350 # ifdef PWQUOTA
5351 sv_setiv(sv, (IV)pwent->pw_quota);
5352 # else
5353 # ifdef PWAGE
5354 sv_setpv(sv, pwent->pw_age);
5355 # endif
5356 # endif
5357 # endif
5358
5359 /* pw_class and pw_comment are mutually exclusive--.
5360 * see the above note for pw_change, pw_quota, and pw_age. */
5361 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5362 # ifdef PWCLASS
5363 sv_setpv(sv, pwent->pw_class);
5364 # else
5365 # ifdef PWCOMMENT
5366 sv_setpv(sv, pwent->pw_comment);
5367 # endif
5368 # endif
5369
5370 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5371 # ifdef PWGECOS
5372 sv_setpv(sv, pwent->pw_gecos);
5373 # endif
5374 # ifndef INCOMPLETE_TAINTS
5375 /* pw_gecos is tainted because user himself can diddle with it. */
5376 SvTAINTED_on(sv);
5377 # endif
5378
5379 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5380 sv_setpv(sv, pwent->pw_dir);
5381
5382 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5383 sv_setpv(sv, pwent->pw_shell);
5384 # ifndef INCOMPLETE_TAINTS
5385 /* pw_shell is tainted because user himself can diddle with it. */
5386 SvTAINTED_on(sv);
5387 # endif
5388
5389 # ifdef PWEXPIRE
5390 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5391 sv_setiv(sv, (IV)pwent->pw_expire);
5392 # endif
5393 }
5394 RETURN;
5395 #else
5396 DIE(aTHX_ PL_no_func, "getpwent");
5397 #endif
5398 }
5399
PP(pp_spwent)5400 PP(pp_spwent)
5401 {
5402 #if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
5403 dSP;
5404 setpwent();
5405 RETPUSHYES;
5406 #else
5407 DIE(aTHX_ PL_no_func, "setpwent");
5408 #endif
5409 }
5410
PP(pp_epwent)5411 PP(pp_epwent)
5412 {
5413 #if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
5414 dSP;
5415 endpwent();
5416 RETPUSHYES;
5417 #else
5418 DIE(aTHX_ PL_no_func, "endpwent");
5419 #endif
5420 }
5421
PP(pp_ggrnam)5422 PP(pp_ggrnam)
5423 {
5424 #ifdef HAS_GROUP
5425 return pp_ggrent();
5426 #else
5427 DIE(aTHX_ PL_no_func, "getgrnam");
5428 #endif
5429 }
5430
PP(pp_ggrgid)5431 PP(pp_ggrgid)
5432 {
5433 #ifdef HAS_GROUP
5434 return pp_ggrent();
5435 #else
5436 DIE(aTHX_ PL_no_func, "getgrgid");
5437 #endif
5438 }
5439
PP(pp_ggrent)5440 PP(pp_ggrent)
5441 {
5442 #ifdef HAS_GROUP
5443 dSP;
5444 I32 which = PL_op->op_type;
5445 register char **elem;
5446 register SV *sv;
5447 struct group *grent;
5448 STRLEN n_a;
5449
5450 if (which == OP_GGRNAM) {
5451 char* name = POPpbytex;
5452 grent = (struct group *)getgrnam(name);
5453 }
5454 else if (which == OP_GGRGID) {
5455 Gid_t gid = POPi;
5456 grent = (struct group *)getgrgid(gid);
5457 }
5458 else
5459 #ifdef HAS_GETGRENT
5460 grent = (struct group *)getgrent();
5461 #else
5462 DIE(aTHX_ PL_no_func, "getgrent");
5463 #endif
5464
5465 EXTEND(SP, 4);
5466 if (GIMME != G_ARRAY) {
5467 PUSHs(sv = sv_newmortal());
5468 if (grent) {
5469 if (which == OP_GGRNAM)
5470 sv_setiv(sv, (IV)grent->gr_gid);
5471 else
5472 sv_setpv(sv, grent->gr_name);
5473 }
5474 RETURN;
5475 }
5476
5477 if (grent) {
5478 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5479 sv_setpv(sv, grent->gr_name);
5480
5481 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5482 #ifdef GRPASSWD
5483 sv_setpv(sv, grent->gr_passwd);
5484 #endif
5485
5486 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5487 sv_setiv(sv, (IV)grent->gr_gid);
5488
5489 #if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
5490 PUSHs(sv = sv_mortalcopy(&PL_sv_no));
5491 /* In UNICOS/mk (_CRAYMPP) the multithreading
5492 * versions (getgrnam_r, getgrgid_r)
5493 * seem to return an illegal pointer
5494 * as the group members list, gr_mem.
5495 * getgrent() doesn't even have a _r version
5496 * but the gr_mem is poisonous anyway.
5497 * So yes, you cannot get the list of group
5498 * members if building multithreaded in UNICOS/mk. */
5499 for (elem = grent->gr_mem; elem && *elem; elem++) {
5500 sv_catpv(sv, *elem);
5501 if (elem[1])
5502 sv_catpvn(sv, " ", 1);
5503 }
5504 #endif
5505 }
5506
5507 RETURN;
5508 #else
5509 DIE(aTHX_ PL_no_func, "getgrent");
5510 #endif
5511 }
5512
PP(pp_sgrent)5513 PP(pp_sgrent)
5514 {
5515 #if defined(HAS_GROUP) && defined(HAS_SETGRENT)
5516 dSP;
5517 setgrent();
5518 RETPUSHYES;
5519 #else
5520 DIE(aTHX_ PL_no_func, "setgrent");
5521 #endif
5522 }
5523
PP(pp_egrent)5524 PP(pp_egrent)
5525 {
5526 #if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
5527 dSP;
5528 endgrent();
5529 RETPUSHYES;
5530 #else
5531 DIE(aTHX_ PL_no_func, "endgrent");
5532 #endif
5533 }
5534
PP(pp_getlogin)5535 PP(pp_getlogin)
5536 {
5537 #ifdef HAS_GETLOGIN
5538 dSP; dTARGET;
5539 char *tmps;
5540 EXTEND(SP, 1);
5541 if (!(tmps = PerlProc_getlogin()))
5542 RETPUSHUNDEF;
5543 PUSHp(tmps, strlen(tmps));
5544 RETURN;
5545 #else
5546 DIE(aTHX_ PL_no_func, "getlogin");
5547 #endif
5548 }
5549
5550 /* Miscellaneous. */
5551
PP(pp_syscall)5552 PP(pp_syscall)
5553 {
5554 #ifdef HAS_SYSCALL
5555 dSP; dMARK; dORIGMARK; dTARGET;
5556 register I32 items = SP - MARK;
5557 unsigned long a[20];
5558 register I32 i = 0;
5559 I32 retval = -1;
5560 STRLEN n_a;
5561
5562 if (PL_tainting) {
5563 while (++MARK <= SP) {
5564 if (SvTAINTED(*MARK)) {
5565 TAINT;
5566 break;
5567 }
5568 }
5569 MARK = ORIGMARK;
5570 TAINT_PROPER("syscall");
5571 }
5572
5573 /* This probably won't work on machines where sizeof(long) != sizeof(int)
5574 * or where sizeof(long) != sizeof(char*). But such machines will
5575 * not likely have syscall implemented either, so who cares?
5576 */
5577 while (++MARK <= SP) {
5578 if (SvNIOK(*MARK) || !i)
5579 a[i++] = SvIV(*MARK);
5580 else if (*MARK == &PL_sv_undef)
5581 a[i++] = 0;
5582 else
5583 a[i++] = (unsigned long)SvPV_force(*MARK, n_a);
5584 if (i > 15)
5585 break;
5586 }
5587 switch (items) {
5588 default:
5589 DIE(aTHX_ "Too many args to syscall");
5590 case 0:
5591 DIE(aTHX_ "Too few args to syscall");
5592 case 1:
5593 retval = syscall(a[0]);
5594 break;
5595 case 2:
5596 retval = syscall(a[0],a[1]);
5597 break;
5598 case 3:
5599 retval = syscall(a[0],a[1],a[2]);
5600 break;
5601 case 4:
5602 retval = syscall(a[0],a[1],a[2],a[3]);
5603 break;
5604 case 5:
5605 retval = syscall(a[0],a[1],a[2],a[3],a[4]);
5606 break;
5607 case 6:
5608 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
5609 break;
5610 case 7:
5611 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
5612 break;
5613 case 8:
5614 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
5615 break;
5616 #ifdef atarist
5617 case 9:
5618 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
5619 break;
5620 case 10:
5621 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
5622 break;
5623 case 11:
5624 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5625 a[10]);
5626 break;
5627 case 12:
5628 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5629 a[10],a[11]);
5630 break;
5631 case 13:
5632 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5633 a[10],a[11],a[12]);
5634 break;
5635 case 14:
5636 retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
5637 a[10],a[11],a[12],a[13]);
5638 break;
5639 #endif /* atarist */
5640 }
5641 SP = ORIGMARK;
5642 PUSHi(retval);
5643 RETURN;
5644 #else
5645 DIE(aTHX_ PL_no_func, "syscall");
5646 #endif
5647 }
5648
5649 #ifdef FCNTL_EMULATE_FLOCK
5650
5651 /* XXX Emulate flock() with fcntl().
5652 What's really needed is a good file locking module.
5653 */
5654
5655 static int
fcntl_emulate_flock(int fd,int operation)5656 fcntl_emulate_flock(int fd, int operation)
5657 {
5658 struct flock flock;
5659
5660 switch (operation & ~LOCK_NB) {
5661 case LOCK_SH:
5662 flock.l_type = F_RDLCK;
5663 break;
5664 case LOCK_EX:
5665 flock.l_type = F_WRLCK;
5666 break;
5667 case LOCK_UN:
5668 flock.l_type = F_UNLCK;
5669 break;
5670 default:
5671 errno = EINVAL;
5672 return -1;
5673 }
5674 flock.l_whence = SEEK_SET;
5675 flock.l_start = flock.l_len = (Off_t)0;
5676
5677 return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
5678 }
5679
5680 #endif /* FCNTL_EMULATE_FLOCK */
5681
5682 #ifdef LOCKF_EMULATE_FLOCK
5683
5684 /* XXX Emulate flock() with lockf(). This is just to increase
5685 portability of scripts. The calls are not completely
5686 interchangeable. What's really needed is a good file
5687 locking module.
5688 */
5689
5690 /* The lockf() constants might have been defined in <unistd.h>.
5691 Unfortunately, <unistd.h> causes troubles on some mixed
5692 (BSD/POSIX) systems, such as SunOS 4.1.3.
5693
5694 Further, the lockf() constants aren't POSIX, so they might not be
5695 visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
5696 just stick in the SVID values and be done with it. Sigh.
5697 */
5698
5699 # ifndef F_ULOCK
5700 # define F_ULOCK 0 /* Unlock a previously locked region */
5701 # endif
5702 # ifndef F_LOCK
5703 # define F_LOCK 1 /* Lock a region for exclusive use */
5704 # endif
5705 # ifndef F_TLOCK
5706 # define F_TLOCK 2 /* Test and lock a region for exclusive use */
5707 # endif
5708 # ifndef F_TEST
5709 # define F_TEST 3 /* Test a region for other processes locks */
5710 # endif
5711
5712 static int
lockf_emulate_flock(int fd,int operation)5713 lockf_emulate_flock(int fd, int operation)
5714 {
5715 int i;
5716 int save_errno;
5717 Off_t pos;
5718
5719 /* flock locks entire file so for lockf we need to do the same */
5720 save_errno = errno;
5721 pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
5722 if (pos > 0) /* is seekable and needs to be repositioned */
5723 if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
5724 pos = -1; /* seek failed, so don't seek back afterwards */
5725 errno = save_errno;
5726
5727 switch (operation) {
5728
5729 /* LOCK_SH - get a shared lock */
5730 case LOCK_SH:
5731 /* LOCK_EX - get an exclusive lock */
5732 case LOCK_EX:
5733 i = lockf (fd, F_LOCK, 0);
5734 break;
5735
5736 /* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
5737 case LOCK_SH|LOCK_NB:
5738 /* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
5739 case LOCK_EX|LOCK_NB:
5740 i = lockf (fd, F_TLOCK, 0);
5741 if (i == -1)
5742 if ((errno == EAGAIN) || (errno == EACCES))
5743 errno = EWOULDBLOCK;
5744 break;
5745
5746 /* LOCK_UN - unlock (non-blocking is a no-op) */
5747 case LOCK_UN:
5748 case LOCK_UN|LOCK_NB:
5749 i = lockf (fd, F_ULOCK, 0);
5750 break;
5751
5752 /* Default - can't decipher operation */
5753 default:
5754 i = -1;
5755 errno = EINVAL;
5756 break;
5757 }
5758
5759 if (pos > 0) /* need to restore position of the handle */
5760 PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
5761
5762 return (i);
5763 }
5764
5765 #endif /* LOCKF_EMULATE_FLOCK */
5766